122745888 has 48 divisors (see below), whose sum is σ = 358011360. Its totient is φ = 40915008.

The previous prime is 122745869. The next prime is 122745913. The reversal of 122745888 is 888547221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

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, 70170 + ... + 71897.

It is an arithmetic number, because the mean of its divisors is an integer number (7458570).

Almost surely, 2^122745888 is an apocalyptic number.

122745888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

122745888 is an abundant number, since it is smaller than the sum of its proper divisors (235265472).

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

122745888 is a wasteful number, since it uses less digits than its factorization.

122745888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142086 (or 142072 counting only the distinct ones).

The product of its digits is 286720, while the sum is 45.

The square root of 122745888 is about 11079.0743295638. The cubic root of 122745888 is about 496.9762682875.

The spelling of 122745888 in words is "one hundred twenty-two million, seven hundred forty-five thousand, eight hundred eighty-eight".