402322242 has 24 divisors (see below), whose sum is σ = 936015696. Its totient is φ = 114949128.

The previous prime is 402322237. The next prime is 402322259. The reversal of 402322242 is 242223204.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 683928 + ... + 684515.

It is an arithmetic number, because the mean of its divisors is an integer number (39000654).

Almost surely, 2^402322242 is an apocalyptic number.

402322242 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

402322242 is an abundant number, since it is smaller than the sum of its proper divisors (533693454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402322242 is a wasteful number, since it uses less digits than its factorization.

402322242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368462 (or 1368455 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 402322242 is about 20057.9720310903. The cubic root of 402322242 is about 738.2294180292.

Adding to 402322242 its reverse (242223204), we get a palindrome (644545446).

The spelling of 402322242 in words is "four hundred two million, three hundred twenty-two thousand, two hundred forty-two".