124052521 has 4 divisors (see below), whose sum is σ = 124175044. Its totient is φ = 123930000.

The previous prime is 124052503. The next prime is 124052531. The reversal of 124052521 is 125250421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 125250421 = 1429 ⋅87649.

It can be written as a sum of positive squares in 2 ways, for example, as 69956496 + 54096025 = 8364^2 + 7355^2 .

It is a cyclic number.

It is not a de Polignac number, because 124052521 - 2⁷ = 124052393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124052492 and 124052501.

It is not an unprimeable number, because it can be changed into a prime (124052531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59730 + ... + 61771.

It is an arithmetic number, because the mean of its divisors is an integer number (31043761).

Almost surely, 2^124052521 is an apocalyptic number.

It is an amenable number.

124052521 is a deficient number, since it is larger than the sum of its proper divisors (122523).

124052521 is a wasteful number, since it uses less digits than its factorization.

124052521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122522.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 124052521 is about 11137.8867385155. The cubic root of 124052521 is about 498.7334892766.

The spelling of 124052521 in words is "one hundred twenty-four million, fifty-two thousand, five hundred twenty-one".