124230521 has 4 divisors (see below), whose sum is σ = 129631872. Its totient is φ = 118829172.

The previous prime is 124230503. The next prime is 124230539. The reversal of 124230521 is 125032421.

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, and also an emirpimes, since its reverse is a distinct semiprime: 125032421 = 103 ⋅1213907.

It is an interprime number because it is at equal distance from previous prime (124230503) and next prime (124230539).

It is a cyclic number.

It is not a de Polignac number, because 124230521 - 2¹⁴ = 124214137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124230493 and 124230502.

It is not an unprimeable number, because it can be changed into a prime (124236521) 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, 2700641 + ... + 2700686.

It is an arithmetic number, because the mean of its divisors is an integer number (32407968).

Almost surely, 2^124230521 is an apocalyptic number.

It is an amenable number.

124230521 is a deficient number, since it is larger than the sum of its proper divisors (5401351).

124230521 is an equidigital number, since it uses as much as digits as its factorization.

124230521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5401350.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 124230521 is about 11145.8746179921. The cubic root of 124230521 is about 498.9719155335.

Adding to 124230521 its reverse (125032421), we get a palindrome (249262942).

The spelling of 124230521 in words is "one hundred twenty-four million, two hundred thirty thousand, five hundred twenty-one".