124152521 has 4 divisors (see below), whose sum is σ = 126794112. Its totient is φ = 121510932.

The previous prime is 124152493. The next prime is 124152557. The reversal of 124152521 is 125251421.

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.

It is a cyclic number.

It is not a de Polignac number, because 124152521 - 2¹⁴ = 124136137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124152221) 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, 1320725 + ... + 1320818.

It is an arithmetic number, because the mean of its divisors is an integer number (31698528).

Almost surely, 2^124152521 is an apocalyptic number.

It is an amenable number.

124152521 is a deficient number, since it is larger than the sum of its proper divisors (2641591).

124152521 is an equidigital number, since it uses as much as digits as its factorization.

124152521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2641590.

The product of its digits is 800, while the sum is 23.

The square root of 124152521 is about 11142.3750161265. The cubic root of 124152521 is about 498.8674646643.

The spelling of 124152521 in words is "one hundred twenty-four million, one hundred fifty-two thousand, five hundred twenty-one".