124567921 has 3 divisors (see below), whose sum is σ = 124579083. Its totient is φ = 124556760.

The previous prime is 124567901. The next prime is 124567957. The reversal of 124567921 is 129765421.

The square root of 124567921 is 11161.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 2686321 + 121881600 = 1639^2 + 11040^2 .

It is not a de Polignac number, because 124567921 - 2⁹ = 124567409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124567901) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5581 + ... + 16741.

It is an arithmetic number, because the mean of its divisors is an integer number (41526361).

Almost surely, 2^124567921 is an apocalyptic number.

124567921 is the 11161-st square number.

124567921 is the 5581-st centered octagonal number.

It is an amenable number.

124567921 is a deficient number, since it is larger than the sum of its proper divisors (11162).

124567921 is an frugal number, since it uses more digits than its factorization.

124567921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22322 (or 11161 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The cubic root of 124567921 is about 499.4232295943.

The spelling of 124567921 in words is "one hundred twenty-four million, five hundred sixty-seven thousand, nine hundred twenty-one".