122057840 has 20 divisors (see below), whose sum is σ = 283784664. Its totient is φ = 48823104.

The previous prime is 122057813. The next prime is 122057867. The reversal of 122057840 is 48750221.

It is an interprime number because it is at equal distance from previous prime (122057813) and next prime (122057867).

It is a tau number, because it is divible by the number of its divisors (20).

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 3 ways as a sum of consecutive naturals, for example, 762782 + ... + 762941.

Almost surely, 2^122057840 is an apocalyptic number.

122057840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122057840 is an abundant number, since it is smaller than the sum of its proper divisors (161726824).

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

122057840 is a wasteful number, since it uses less digits than its factorization.

122057840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525736 (or 1525730 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 122057840 is about 11047.9790007042. The cubic root of 122057840 is about 496.0459331377.

The spelling of 122057840 in words is "one hundred twenty-two million, fifty-seven thousand, eight hundred forty".