123724 has 6 divisors (see below), whose sum is σ = 216524. Its totient is φ = 61860.

The previous prime is 123719. The next prime is 123727. The reversal of 123724 is 427321.

It is not an unprimeable number, because it can be changed into a prime (123727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15462 + ... + 15469.

2¹²³⁷²⁴ is an apocalyptic number.

It is an amenable number.

123724 is a deficient number, since it is larger than the sum of its proper divisors (92800).

123724 is a wasteful number, since it uses less digits than its factorization.

123724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30935 (or 30933 counting only the distinct ones).

The product of its digits is 336, while the sum is 19.

The square root of 123724 is about 351.7442252547. The cubic root of 123724 is about 49.8292844541.

The spelling of 123724 in words is "one hundred twenty-three thousand, seven hundred twenty-four", and thus it is an iban number.