120252157 has 4 divisors (see below), whose sum is σ = 120403836. Its totient is φ = 120100480.

The previous prime is 120252151. The next prime is 120252173. The reversal of 120252157 is 751252021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 751252021 = 13 ⋅57788617.

It can be written as a sum of positive squares in 2 ways, for example, as 19971961 + 100280196 = 4469^2 + 10014^2 .

It is a cyclic number.

It is not a de Polignac number, because 120252157 - 2¹⁵ = 120219389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120252151) 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, 74644 + ... + 76237.

It is an arithmetic number, because the mean of its divisors is an integer number (30100959).

Almost surely, 2^120252157 is an apocalyptic number.

It is an amenable number.

120252157 is a deficient number, since it is larger than the sum of its proper divisors (151679).

120252157 is an equidigital number, since it uses as much as digits as its factorization.

120252157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151678.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 120252157 is about 10965.9544500239. The cubic root of 120252157 is about 493.5876579571.

It can be divided in two parts, 120252 and 157, that added together give a square (120409 = 347²).

The spelling of 120252157 in words is "one hundred twenty million, two hundred fifty-two thousand, one hundred fifty-seven".