402112515 has 32 divisors (see below), whose sum is σ = 742450176. Its totient is φ = 182033280.

The previous prime is 402112499. The next prime is 402112517. The reversal of 402112515 is 515211204.

It is not a de Polignac number, because 402112515 - 2⁴ = 402112499 is a prime.

It is a super-3 number, since 3×402112515³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 402112491 and 402112500.

It is not an unprimeable number, because it can be changed into a prime (402112517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7776 + ... + 29405.

It is an arithmetic number, because the mean of its divisors is an integer number (23201568).

Almost surely, 2^402112515 is an apocalyptic number.

402112515 is a deficient number, since it is larger than the sum of its proper divisors (340337661).

402112515 is a wasteful number, since it uses less digits than its factorization.

402112515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37299.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 402112515 is about 20052.7433285324. The cubic root of 402112515 is about 738.1011182601.

Adding to 402112515 its reverse (515211204), we get a palindrome (917323719).

The spelling of 402112515 in words is "four hundred two million, one hundred twelve thousand, five hundred fifteen".