120144139 has 2 divisors, whose sum is σ = 120144140. Its totient is φ = 120144138.

The previous prime is 120144131. The next prime is 120144179. The reversal of 120144139 is 931441021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120144139 - 2³ = 120144131 is a prime.

It is a super-2 number, since 2×120144139² = 28869228272102642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (120144131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60072069 + 60072070.

It is an arithmetic number, because the mean of its divisors is an integer number (60072070).

Almost surely, 2^120144139 is an apocalyptic number.

120144139 is a deficient number, since it is larger than the sum of its proper divisors (1).

120144139 is an equidigital number, since it uses as much as digits as its factorization.

120144139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 120144139 is about 10961.0281908222. The cubic root of 120144139 is about 493.4398232599.

The spelling of 120144139 in words is "one hundred twenty million, one hundred forty-four thousand, one hundred thirty-nine".