120102157 has 4 divisors (see below), whose sum is σ = 137259616. Its totient is φ = 102944700.

The previous prime is 120102133. The next prime is 120102167. The reversal of 120102157 is 751201021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 751201021 = 31 ⋅24232291.

It is a cyclic number.

It is not a de Polignac number, because 120102157 - 2²³ = 111713549 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 (120102167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8578719 + ... + 8578732.

It is an arithmetic number, because the mean of its divisors is an integer number (34314904).

Almost surely, 2^120102157 is an apocalyptic number.

It is an amenable number.

120102157 is a deficient number, since it is larger than the sum of its proper divisors (17157459).

120102157 is an equidigital number, since it uses as much as digits as its factorization.

120102157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17157458.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 120102157 is about 10959.1129659293. The cubic root of 120102157 is about 493.3823422925.

Adding to 120102157 its reverse (751201021), we get a palindrome (871303178).

The spelling of 120102157 in words is "one hundred twenty million, one hundred two thousand, one hundred fifty-seven".