120613779 has 84 divisors (see below), whose sum is σ = 216020520. Its totient is φ = 66718080.

The previous prime is 120613741. The next prime is 120613781. The reversal of 120613779 is 977316021.

It is a happy number.

It is not a de Polignac number, because 120613779 - 2⁷ = 120613651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120613799) by changing a digit.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 1355167 + ... + 1355255.

Almost surely, 2^120613779 is an apocalyptic number.

120613779 is a deficient number, since it is larger than the sum of its proper divisors (95406741).

120613779 is an equidigital number, since it uses as much as digits as its factorization.

120613779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 120613779 is about 10982.4304687077. The cubic root of 120613779 is about 494.0819347014.

The spelling of 120613779 in words is "one hundred twenty million, six hundred thirteen thousand, seven hundred seventy-nine".