120256319 has 4 divisors (see below), whose sum is σ = 120579096. Its totient is φ = 119933544.

The previous prime is 120256313. The next prime is 120256333. The reversal of 120256319 is 913652021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 913652021 = 97 ⋅9419093.

It is a cyclic number.

It is not a de Polignac number, because 120256319 - 2⁸ = 120256063 is a prime.

It is a super-2 number, since 2×120256319² = 28923164518859522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120256291 and 120256300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120256313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160829 + ... + 161574.

It is an arithmetic number, because the mean of its divisors is an integer number (30144774).

Almost surely, 2^120256319 is an apocalyptic number.

120256319 is a deficient number, since it is larger than the sum of its proper divisors (322777).

120256319 is an equidigital number, since it uses as much as digits as its factorization.

120256319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322776.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 120256319 is about 10966.1442175452. The cubic root of 120256319 is about 493.5933523473.

The spelling of 120256319 in words is "one hundred twenty million, two hundred fifty-six thousand, three hundred nineteen".