402015502 has 24 divisors (see below), whose sum is σ = 724109760. Its totient is φ = 166733280.

The previous prime is 402015491. The next prime is 402015503. The reversal of 402015502 is 205510204.

It is a self number, because there is not a number n which added to its sum of digits gives 402015502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402015503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63127 + ... + 69202.

It is an arithmetic number, because the mean of its divisors is an integer number (30171240).

Almost surely, 2^402015502 is an apocalyptic number.

402015502 is a deficient number, since it is larger than the sum of its proper divisors (322094258).

402015502 is a wasteful number, since it uses less digits than its factorization.

402015502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132376 (or 132369 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 402015502 is about 20050.3242367798. The cubic root of 402015502 is about 738.0417558012.

Adding to 402015502 its reverse (205510204), we get a palindrome (607525706).

The spelling of 402015502 in words is "four hundred two million, fifteen thousand, five hundred two".