157234121 has 8 divisors (see below), whose sum is σ = 173595744. Its totient is φ = 141217120.

The previous prime is 157234109. The next prime is 157234123. The reversal of 157234121 is 121432751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-157234121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (157234123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85196 + ... + 87021.

It is an arithmetic number, because the mean of its divisors is an integer number (21699468).

Almost surely, 2^157234121 is an apocalyptic number.

157234121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

157234121 is a deficient number, since it is larger than the sum of its proper divisors (16361623).

157234121 is a wasteful number, since it uses less digits than its factorization.

157234121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172311.

The product of its digits is 1680, while the sum is 26.

The square root of 157234121 is about 12539.3030508079. The cubic root of 157234121 is about 539.7370930998.

Adding to 157234121 its reverse (121432751), we get a palindrome (278666872).

The spelling of 157234121 in words is "one hundred fifty-seven million, two hundred thirty-four thousand, one hundred twenty-one".