120415391 has 2 divisors, whose sum is σ = 120415392. Its totient is φ = 120415390.

The previous prime is 120415349. The next prime is 120415411. The reversal of 120415391 is 193514021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120415391 - 2²⁶ = 53306527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120415391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120415291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60207695 + 60207696.

It is an arithmetic number, because the mean of its divisors is an integer number (60207696).

Almost surely, 2^120415391 is an apocalyptic number.

120415391 is a deficient number, since it is larger than the sum of its proper divisors (1).

120415391 is an equidigital number, since it uses as much as digits as its factorization.

120415391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 120415391 is about 10973.3946889739. The cubic root of 120415391 is about 493.8108940332.

The spelling of 120415391 in words is "one hundred twenty million, four hundred fifteen thousand, three hundred ninety-one".