157044121 has 4 divisors (see below), whose sum is σ = 169124452. Its totient is φ = 144963792.

The previous prime is 157044103. The next prime is 157044131. The reversal of 157044121 is 121440751.

157044121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121440751 = 5153 ⋅23567.

It can be written as a sum of positive squares in 2 ways, for example, as 58736896 + 98307225 = 7664^2 + 9915^2 .

It is a cyclic number.

It is not a de Polignac number, because 157044121 - 2⁷ = 157043993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157044131) 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, 6040146 + ... + 6040171.

It is an arithmetic number, because the mean of its divisors is an integer number (42281113).

Almost surely, 2^157044121 is an apocalyptic number.

It is an amenable number.

157044121 is a deficient number, since it is larger than the sum of its proper divisors (12080331).

157044121 is a wasteful number, since it uses less digits than its factorization.

157044121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12080330.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 157044121 is about 12531.7245820358. The cubic root of 157044121 is about 539.5196013290.

Adding to 157044121 its reverse (121440751), we get a palindrome (278484872).

The spelling of 157044121 in words is "one hundred fifty-seven million, forty-four thousand, one hundred twenty-one".