120123139 has 6 divisors (see below), whose sum is σ = 127605164. Its totient is φ = 113056800.

The previous prime is 120123121. The next prime is 120123167. The reversal of 120123139 is 931321021.

It is not a de Polignac number, because 120123139 - 2⁷ = 120123011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120123739) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 207537 + ... + 208114.

Almost surely, 2^120123139 is an apocalyptic number.

120123139 is a deficient number, since it is larger than the sum of its proper divisors (7482025).

120123139 is an equidigital number, since it uses as much as digits as its factorization.

120123139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415685 (or 415668 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 120123139 is about 10960.0702096291. The cubic root of 120123139 is about 493.4110721277.

It can be divided in two parts, 12012 and 3139, that added together give a palindrome (15151).

The spelling of 120123139 in words is "one hundred twenty million, one hundred twenty-three thousand, one hundred thirty-nine".