124157 has 4 divisors (see below), whose sum is σ = 135456. Its totient is φ = 112860.

The previous prime is 124153. The next prime is 124171. The reversal of 124157 is 751421.

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: 751421 = 11 ⋅68311.

It is not a de Polignac number, because 124157 - 2² = 124153 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124153) 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, 5633 + ... + 5654.

It is an arithmetic number, because the mean of its divisors is an integer number (33864).

2¹²⁴¹⁵⁷ is an apocalyptic number.

It is an amenable number.

124157 is a deficient number, since it is larger than the sum of its proper divisors (11299).

124157 is a wasteful number, since it uses less digits than its factorization.

124157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11298.

The product of its digits is 280, while the sum is 20.

The square root of 124157 is about 352.3591917348. The cubic root of 124157 is about 49.8873463738.

Adding to 124157 its reverse (751421), we get a palindrome (875578).

Subtracting 124157 from its reverse (751421), we obtain a square (627264 = 792²).

The spelling of 124157 in words is "one hundred twenty-four thousand, one hundred fifty-seven".