122569720 has 128 divisors (see below), whose sum is σ = 343203840. Its totient is φ = 38361600.

The previous prime is 122569717. The next prime is 122569723. The reversal of 122569720 is 27965221.

It is an interprime number because it is at equal distance from previous prime (122569717) and next prime (122569723).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122569723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 549529 + ... + 549751.

It is an arithmetic number, because the mean of its divisors is an integer number (2681280).

Almost surely, 2^122569720 is an apocalyptic number.

122569720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122569720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171601920).

122569720 is an abundant number, since it is smaller than the sum of its proper divisors (220634120).

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

122569720 is a wasteful number, since it uses less digits than its factorization.

122569720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 122569720 is about 11071.1209911192. The cubic root of 122569720 is about 496.7383968189.

The spelling of 122569720 in words is "one hundred twenty-two million, five hundred sixty-nine thousand, seven hundred twenty".