424403121 has 16 divisors (see below), whose sum is σ = 572976000. Its totient is φ = 279404928.

The previous prime is 424403117. The next prime is 424403131. The reversal of 424403121 is 121304424.

It is not a de Polignac number, because 424403121 - 2² = 424403117 is a prime.

It is a super-2 number, since 2×424403121² = 360236018229081282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (424403131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79195 + ... + 84383.

It is an arithmetic number, because the mean of its divisors is an integer number (35811000).

Almost surely, 2^424403121 is an apocalyptic number.

It is an amenable number.

424403121 is a deficient number, since it is larger than the sum of its proper divisors (148572879).

424403121 is a wasteful number, since it uses less digits than its factorization.

424403121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5528.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 424403121 is about 20601.0465996269. The cubic root of 424403121 is about 751.4951631134.

Adding to 424403121 its reverse (121304424), we get a palindrome (545707545).

The spelling of 424403121 in words is "four hundred twenty-four million, four hundred three thousand, one hundred twenty-one".