120320451 has 16 divisors (see below), whose sum is σ = 178713120. Its totient is φ = 80006400.

The previous prime is 120320443. The next prime is 120320513. The reversal of 120320451 is 154023021.

It is not a de Polignac number, because 120320451 - 2³ = 120320443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120320051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5271 + ... + 16383.

It is an arithmetic number, because the mean of its divisors is an integer number (11169570).

Almost surely, 2^120320451 is an apocalyptic number.

120320451 is a deficient number, since it is larger than the sum of its proper divisors (58392669).

120320451 is a wasteful number, since it uses less digits than its factorization.

120320451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11523 (or 11517 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 120320451 is about 10969.0679184696. The cubic root of 120320451 is about 493.6810802484.

Adding to 120320451 its reverse (154023021), we get a palindrome (274343472).

The spelling of 120320451 in words is "one hundred twenty million, three hundred twenty thousand, four hundred fifty-one".