120126939 has 4 divisors (see below), whose sum is σ = 160169256. Its totient is φ = 80084624.

The previous prime is 120126931. The next prime is 120126989. The reversal of 120126939 is 939621021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939621021 = 3 ⋅313207007.

It is a cyclic number.

It is not a de Polignac number, because 120126939 - 2³ = 120126931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120126931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20021154 + ... + 20021159.

It is an arithmetic number, because the mean of its divisors is an integer number (40042314).

Almost surely, 2^120126939 is an apocalyptic number.

120126939 is a deficient number, since it is larger than the sum of its proper divisors (40042317).

120126939 is an equidigital number, since it uses as much as digits as its factorization.

120126939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40042316.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 120126939 is about 10960.2435648119. The cubic root of 120126939 is about 493.4162749618.

The spelling of 120126939 in words is "one hundred twenty million, one hundred twenty-six thousand, nine hundred thirty-nine".