122902981 has 8 divisors (see below), whose sum is σ = 124642584. Its totient is φ = 121175040.

The previous prime is 122902973. The next prime is 122903009. The reversal of 122902981 is 189209221.

It can be written as a sum of positive squares in 4 ways, for example, as 9054081 + 113848900 = 3009^2 + 10670^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122902981 - 2³ = 122902973 is a prime.

It is a super-2 number, since 2×122902981² = 30210285477372722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122902921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19501 + ... + 25021.

It is an arithmetic number, because the mean of its divisors is an integer number (15580323).

Almost surely, 2^122902981 is an apocalyptic number.

It is an amenable number.

122902981 is a deficient number, since it is larger than the sum of its proper divisors (1739603).

122902981 is a wasteful number, since it uses less digits than its factorization.

122902981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5831.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 122902981 is about 11086.1616892412. The cubic root of 122902981 is about 497.1881917769.

The spelling of 122902981 in words is "one hundred twenty-two million, nine hundred two thousand, nine hundred eighty-one".