402042315 has 16 divisors (see below), whose sum is σ = 643539456. Its totient is φ = 214332000.

The previous prime is 402042301. The next prime is 402042331. The reversal of 402042315 is 513240204.

It is not a de Polignac number, because 402042315 - 2¹⁵ = 402009547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402042291 and 402042300.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46590 + ... + 54540.

It is an arithmetic number, because the mean of its divisors is an integer number (40221216).

Almost surely, 2^402042315 is an apocalyptic number.

402042315 is a deficient number, since it is larger than the sum of its proper divisors (241497141).

402042315 is a wasteful number, since it uses less digits than its factorization.

402042315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11330.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 402042315 is about 20050.9928681849. The cubic root of 402042315 is about 738.0581636872.

Adding to 402042315 its reverse (513240204), we get a palindrome (915282519).

The spelling of 402042315 in words is "four hundred two million, forty-two thousand, three hundred fifteen".