120372145 has 4 divisors (see below), whose sum is σ = 144446580. Its totient is φ = 96297712.

The previous prime is 120372143. The next prime is 120372149. The reversal of 120372145 is 541273021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15186609 + 105185536 = 3897^2 + 10256^2 .

It is a cyclic number.

It is not a de Polignac number, because 120372145 - 2¹ = 120372143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120372143) 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, 12037210 + ... + 12037219.

It is an arithmetic number, because the mean of its divisors is an integer number (36111645).

Almost surely, 2^120372145 is an apocalyptic number.

It is an amenable number.

120372145 is a deficient number, since it is larger than the sum of its proper divisors (24074435).

120372145 is an equidigital number, since it uses as much as digits as its factorization.

120372145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24074434.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 120372145 is about 10971.4240187863. The cubic root of 120372145 is about 493.7517711842.

The spelling of 120372145 in words is "one hundred twenty million, three hundred seventy-two thousand, one hundred forty-five".