120424157 has 4 divisors (see below), whose sum is σ = 137627616. Its totient is φ = 103220700.

The previous prime is 120424121. The next prime is 120424189. The reversal of 120424157 is 751424021.

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.

It is a cyclic number.

It is not a de Polignac number, because 120424157 - 2¹⁰ = 120423133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120424357) 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, 8601719 + ... + 8601732.

It is an arithmetic number, because the mean of its divisors is an integer number (34406904).

Almost surely, 2^120424157 is an apocalyptic number.

It is an amenable number.

120424157 is a deficient number, since it is larger than the sum of its proper divisors (17203459).

120424157 is an equidigital number, since it uses as much as digits as its factorization.

120424157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17203458.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 120424157 is about 10973.7941023148. The cubic root of 120424157 is about 493.8228765581.

Adding to 120424157 its reverse (751424021), we get a palindrome (871848178).

The spelling of 120424157 in words is "one hundred twenty million, four hundred twenty-four thousand, one hundred fifty-seven".