120125591 has 2 divisors, whose sum is σ = 120125592. Its totient is φ = 120125590.

The previous prime is 120125563. The next prime is 120125597. The reversal of 120125591 is 195521021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120125591 is a prime.

It is a super-2 number, since 2×120125591² = 28860315226198562, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120125591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120125597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60062795 + 60062796.

It is an arithmetic number, because the mean of its divisors is an integer number (60062796).

Almost surely, 2^120125591 is an apocalyptic number.

120125591 is a deficient number, since it is larger than the sum of its proper divisors (1).

120125591 is an equidigital number, since it uses as much as digits as its factorization.

120125591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 120125591 is about 10960.1820696556. The cubic root of 120125591 is about 493.4144293374.

The spelling of 120125591 in words is "one hundred twenty million, one hundred twenty-five thousand, five hundred ninety-one".