120451 has 4 divisors (see below), whose sum is σ = 125712. Its totient is φ = 115192.

The previous prime is 120431. The next prime is 120473. The reversal of 120451 is 154021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154021 = 7 ⋅22003.

It is a cyclic number.

It is not a de Polignac number, because 120451 - 2¹⁵ = 87683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2596 + ... + 2641.

It is an arithmetic number, because the mean of its divisors is an integer number (31428).

2¹²⁰⁴⁵¹ is an apocalyptic number.

120451 is the 220-th centered pentagonal number.

120451 is a deficient number, since it is larger than the sum of its proper divisors (5261).

120451 is an equidigital number, since it uses as much as digits as its factorization.

120451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5260.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 120451 is about 347.0605134555. The cubic root of 120451 is about 49.3859565494.

Adding to 120451 its reverse (154021), we get a palindrome (274472).

The spelling of 120451 in words is "one hundred twenty thousand, four hundred fifty-one".