120961559 has 2 divisors, whose sum is σ = 120961560. Its totient is φ = 120961558.

The previous prime is 120961549. The next prime is 120961609. The reversal of 120961559 is 955169021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120961559 - 2⁸ = 120961303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120961549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60480779 + 60480780.

It is an arithmetic number, because the mean of its divisors is an integer number (60480780).

Almost surely, 2^120961559 is an apocalyptic number.

120961559 is a deficient number, since it is larger than the sum of its proper divisors (1).

120961559 is an equidigital number, since it uses as much as digits as its factorization.

120961559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24300, while the sum is 38.

The square root of 120961559 is about 10998.2525430179. The cubic root of 120961559 is about 494.5563606649.

The spelling of 120961559 in words is "one hundred twenty million, nine hundred sixty-one thousand, five hundred fifty-nine".