120915901 has 2 divisors, whose sum is σ = 120915902. Its totient is φ = 120915900.

The previous prime is 120915869. The next prime is 120915953. The reversal of 120915901 is 109519021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91202500 + 29713401 = 9550^2 + 5451^2 .

It is a cyclic number.

It is not a de Polignac number, because 120915901 - 2⁵ = 120915869 is a prime.

It is a super-2 number, since 2×120915901² = 29241310229283602, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120915901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120915401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60457950 + 60457951.

It is an arithmetic number, because the mean of its divisors is an integer number (60457951).

Almost surely, 2^120915901 is an apocalyptic number.

It is an amenable number.

120915901 is a deficient number, since it is larger than the sum of its proper divisors (1).

120915901 is an equidigital number, since it uses as much as digits as its factorization.

120915901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 28.

The square root of 120915901 is about 10996.1766537283. The cubic root of 120915901 is about 494.4941279574.

The spelling of 120915901 in words is "one hundred twenty million, nine hundred fifteen thousand, nine hundred one".