120142108779 has 24 divisors (see below), whose sum is σ = 203283125568. Its totient is φ = 62411484240.

The previous prime is 120142108741. The next prime is 120142108783. The reversal of 120142108779 is 977801241021.

It is not a de Polignac number, because 120142108779 - 2⁷ = 120142108651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120142108779.

It is not an unprimeable number, because it can be changed into a prime (120142108799) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37148077 + ... + 37151310.

It is an arithmetic number, because the mean of its divisors is an integer number (8470130232).

Almost surely, 2^120142108779 is an apocalyptic number.

120142108779 is a deficient number, since it is larger than the sum of its proper divisors (83141016789).

120142108779 is a wasteful number, since it uses less digits than its factorization.

120142108779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74299415 (or 74299408 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 42.

The spelling of 120142108779 in words is "one hundred twenty billion, one hundred forty-two million, one hundred eight thousand, seven hundred seventy-nine".