402505113 has 16 divisors (see below), whose sum is σ = 545541696. Its totient is φ = 263915520.

The previous prime is 402505111. The next prime is 402505121. The reversal of 402505113 is 311505204.

It is not a de Polignac number, because 402505113 - 2¹ = 402505111 is a prime.

It is a super-2 number, since 2×402505113² = 324020731982285538, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 402505113.

It is not an unprimeable number, because it can be changed into a prime (402505111) 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, 175945 + ... + 178217.

It is an arithmetic number, because the mean of its divisors is an integer number (34096356).

Almost surely, 2^402505113 is an apocalyptic number.

It is an amenable number.

402505113 is a deficient number, since it is larger than the sum of its proper divisors (143036583).

402505113 is a wasteful number, since it uses less digits than its factorization.

402505113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3224.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 402505113 is about 20062.5300747438. The cubic root of 402505113 is about 738.3412523489.

Subtracting from 402505113 its reverse (311505204), we obtain a palindrome (90999909).

It can be divided in two parts, 402 and 505113, that added together give a triangular number (505515 = T₁₀₀₅).

The spelling of 402505113 in words is "four hundred two million, five hundred five thousand, one hundred thirteen".