402504041 has 16 divisors (see below), whose sum is σ = 417374208. Its totient is φ = 387987600.

The previous prime is 402504023. The next prime is 402504059. The reversal of 402504041 is 140405204.

It is an interprime number because it is at equal distance from previous prime (402504023) and next prime (402504059).

It is a cyclic number.

It is not a de Polignac number, because 402504041 - 2⁶ = 402503977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402504001) 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, 908366 + ... + 908808.

It is an arithmetic number, because the mean of its divisors is an integer number (26085888).

Almost surely, 2^402504041 is an apocalyptic number.

It is an amenable number.

402504041 is a deficient number, since it is larger than the sum of its proper divisors (14870167).

402504041 is a wasteful number, since it uses less digits than its factorization.

402504041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 402504041 is about 20062.5033582552. The cubic root of 402504041 is about 738.3405968686.

Adding to 402504041 its reverse (140405204), we get a palindrome (542909245).

The spelling of 402504041 in words is "four hundred two million, five hundred four thousand, forty-one".