124425121 has 4 divisors (see below), whose sum is σ = 127072512. Its totient is φ = 121777732.

The previous prime is 124425113. The next prime is 124425137. The reversal of 124425121 is 121524421.

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 124425121 - 2³ = 124425113 is a prime.

It is a super-2 number, since 2×124425121² = 30963221471729282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124425092 and 124425101.

It is not an unprimeable number, because it can be changed into a prime (124425221) 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, 1323625 + ... + 1323718.

It is an arithmetic number, because the mean of its divisors is an integer number (31768128).

Almost surely, 2^124425121 is an apocalyptic number.

It is an amenable number.

124425121 is a deficient number, since it is larger than the sum of its proper divisors (2647391).

124425121 is an equidigital number, since it uses as much as digits as its factorization.

124425121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2647390.

The product of its digits is 640, while the sum is 22.

The square root of 124425121 is about 11154.6008893192. The cubic root of 124425121 is about 499.2323165943.

Adding to 124425121 its reverse (121524421), we get a palindrome (245949542).

The spelling of 124425121 in words is "one hundred twenty-four million, four hundred twenty-five thousand, one hundred twenty-one".