122402840 has 32 divisors (see below), whose sum is σ = 314750880. Its totient is φ = 41966592.

The previous prime is 122402827. The next prime is 122402851. The reversal of 122402840 is 48204221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218297 + ... + 218856.

It is an arithmetic number, because the mean of its divisors is an integer number (9835965).

Almost surely, 2^122402840 is an apocalyptic number.

122402840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122402840 is an abundant number, since it is smaller than the sum of its proper divisors (192348040).

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

122402840 is a wasteful number, since it uses less digits than its factorization.

122402840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437171 (or 437167 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 122402840 is about 11063.5816985278. The cubic root of 122402840 is about 496.5128561952.

The spelling of 122402840 in words is "one hundred twenty-two million, four hundred two thousand, eight hundred forty".