120199957 has 2 divisors, whose sum is σ = 120199958. Its totient is φ = 120199956.

The previous prime is 120199931. The next prime is 120199993. The reversal of 120199957 is 759991021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83887281 + 36312676 = 9159^2 + 6026^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120199957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120199907) 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 as a sum of consecutive naturals, namely, 60099978 + 60099979.

It is an arithmetic number, because the mean of its divisors is an integer number (60099979).

Almost surely, 2^120199957 is an apocalyptic number.

It is an amenable number.

120199957 is a deficient number, since it is larger than the sum of its proper divisors (1).

120199957 is an equidigital number, since it uses as much as digits as its factorization.

120199957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51030, while the sum is 43.

The square root of 120199957 is about 10963.5740978934. The cubic root of 120199957 is about 493.5162274857.

The spelling of 120199957 in words is "one hundred twenty million, one hundred ninety-nine thousand, nine hundred fifty-seven".