122356240 has 40 divisors (see below), whose sum is σ = 289153368. Its totient is φ = 48138240.

The previous prime is 122356189. The next prime is 122356243. The reversal of 122356240 is 42653221.

It can be written as a sum of positive squares in 4 ways, for example, as 121104 + 122235136 = 348^2 + 11056^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (122356243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7657 + ... + 17416.

Almost surely, 2^122356240 is an apocalyptic number.

122356240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122356240 is an abundant number, since it is smaller than the sum of its proper divisors (166797128).

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

122356240 is a wasteful number, since it uses less digits than its factorization.

122356240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25147 (or 25141 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 122356240 is about 11061.4754892826. The cubic root of 122356240 is about 496.4498390409.

The spelling of 122356240 in words is "one hundred twenty-two million, three hundred fifty-six thousand, two hundred forty".