402839122 has 16 divisors (see below), whose sum is σ = 690844032. Its totient is φ = 172579680.

The previous prime is 402839053. The next prime is 402839147. The reversal of 402839122 is 221938204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58198 + ... + 64750.

It is an arithmetic number, because the mean of its divisors is an integer number (43177752).

Almost surely, 2^402839122 is an apocalyptic number.

402839122 is a deficient number, since it is larger than the sum of its proper divisors (288004910).

402839122 is a wasteful number, since it uses less digits than its factorization.

402839122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10953.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 402839122 is about 20070.8525479114. The cubic root of 402839122 is about 738.5454273450.

The spelling of 402839122 in words is "four hundred two million, eight hundred thirty-nine thousand, one hundred twenty-two".