402432242 has 16 divisors (see below), whose sum is σ = 636394752. Its totient is φ = 190481280.

The previous prime is 402432229. The next prime is 402432253. The reversal of 402432242 is 242234204.

It is a super-2 number, since 2×402432242² = 323903418802293128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40634 + ... + 49557.

It is an arithmetic number, because the mean of its divisors is an integer number (39774672).

Almost surely, 2^402432242 is an apocalyptic number.

402432242 is a deficient number, since it is larger than the sum of its proper divisors (233962510).

402432242 is a wasteful number, since it uses less digits than its factorization.

402432242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90313.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 402432242 is about 20060.7138955721. The cubic root of 402432242 is about 738.2966923248.

Adding to 402432242 its reverse (242234204), we get a palindrome (644666446).

The spelling of 402432242 in words is "four hundred two million, four hundred thirty-two thousand, two hundred forty-two".