122899560 has 64 divisors (see below), whose sum is σ = 421372800. Its totient is φ = 28091136.

The previous prime is 122899559. The next prime is 122899561. The reversal of 122899560 is 65998221.

It is an interprime number because it is at equal distance from previous prime (122899559) and next prime (122899561).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (122899561) 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 15 ways as a sum of consecutive naturals, for example, 72315 + ... + 73994.

It is an arithmetic number, because the mean of its divisors is an integer number (6583950).

Almost surely, 2^122899560 is an apocalyptic number.

122899560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122899560 is an abundant number, since it is smaller than the sum of its proper divisors (298473240).

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

122899560 is a wasteful number, since it uses less digits than its factorization.

122899560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146330 (or 146326 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 122899560 is about 11086.0073967141. The cubic root of 122899560 is about 497.1835786624.

The spelling of 122899560 in words is "one hundred twenty-two million, eight hundred ninety-nine thousand, five hundred sixty".