120423139 has 2 divisors, whose sum is σ = 120423140. Its totient is φ = 120423138.

The previous prime is 120423133. The next prime is 120423143. The reversal of 120423139 is 931324021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120423139 - 2¹⁵ = 120390371 is a prime.

It is a super-2 number, since 2×120423139² = 29003464813226642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (120423133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60211569 + 60211570.

It is an arithmetic number, because the mean of its divisors is an integer number (60211570).

Almost surely, 2^120423139 is an apocalyptic number.

120423139 is a deficient number, since it is larger than the sum of its proper divisors (1).

120423139 is an equidigital number, since it uses as much as digits as its factorization.

120423139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 120423139 is about 10973.7477189883. The cubic root of 120423139 is about 493.8214850513.

The spelling of 120423139 in words is "one hundred twenty million, four hundred twenty-three thousand, one hundred thirty-nine".