122320539 has 24 divisors (see below), whose sum is σ = 193632192. Its totient is φ = 73793520.

The previous prime is 122320489. The next prime is 122320543. The reversal of 122320539 is 935023221.

122320539 is a `hidden beast` number, since 122 + 3 + 2 + 0 + 539 = 666.

It is not a de Polignac number, because 122320539 - 2⁸ = 122320283 is a prime.

It is a super-2 number, since 2×122320539² = 29924628522501042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122321539) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19752 + ... + 25194.

It is an arithmetic number, because the mean of its divisors is an integer number (8068008).

Almost surely, 2^122320539 is an apocalyptic number.

122320539 is a deficient number, since it is larger than the sum of its proper divisors (71311653).

122320539 is a wasteful number, since it uses less digits than its factorization.

122320539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5687 (or 5684 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 122320539 is about 11059.8616175791. The cubic root of 122320539 is about 496.4015497730.

The spelling of 122320539 in words is "one hundred twenty-two million, three hundred twenty thousand, five hundred thirty-nine".