124290921 has 8 divisors (see below), whose sum is σ = 166931424. Its totient is φ = 82255520.

The previous prime is 124290917. The next prime is 124290949. The reversal of 124290921 is 129092421.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 124290921 - 2² = 124290917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (124290121) 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, 150795 + ... + 151616.

It is an arithmetic number, because the mean of its divisors is an integer number (20866428).

Almost surely, 2^124290921 is an apocalyptic number.

It is an amenable number.

124290921 is a deficient number, since it is larger than the sum of its proper divisors (42640503).

124290921 is a wasteful number, since it uses less digits than its factorization.

124290921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302551.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 124290921 is about 11148.5838114085. The cubic root of 124290921 is about 499.0527679695.

The spelling of 124290921 in words is "one hundred twenty-four million, two hundred ninety thousand, nine hundred twenty-one".