122909720 has 32 divisors (see below), whose sum is σ = 279886320. Its totient is φ = 48570240.

The previous prime is 122909713. The next prime is 122909729. The reversal of 122909720 is 27909221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122909729) by changing a digit.

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, 15191 + ... + 21830.

Almost surely, 2^122909720 is an apocalyptic number.

122909720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122909720 is an abundant number, since it is smaller than the sum of its proper divisors (156976600).

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

122909720 is a wasteful number, since it uses less digits than its factorization.

122909720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37115 (or 37111 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 122909720 is about 11086.4656225508. The cubic root of 122909720 is about 497.1972788632.

The spelling of 122909720 in words is "one hundred twenty-two million, nine hundred nine thousand, seven hundred twenty".