200010002

Appears in sequences

• Numbers k such that k^2 contains only digits {0,4,9}, not ending with zero.at n=15A058443
• Nonprimes n such that the product of its divisors is a palindrome.at n=30A244411
• Nonprime palindromes n such that the product of divisors of n is also a palindrome.at n=22A244423
• Nonprime palindromes n with only the digits 0, 1, 2 such that the product of divisors of n is also a palindrome.at n=21A261534