124242431 has 4 divisors (see below), whose sum is σ = 125815200. Its totient is φ = 122669664.

The previous prime is 124242413. The next prime is 124242439. The reversal of 124242431 is 134242421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 124242431 - 2¹⁰ = 124241407 is a prime.

It is a super-2 number, since 2×124242431² = 30872363321579522, 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 = 124242397 and 124242406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124242439) 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, 786266 + ... + 786423.

It is an arithmetic number, because the mean of its divisors is an integer number (31453800).

Almost surely, 2^124242431 is an apocalyptic number.

124242431 is a deficient number, since it is larger than the sum of its proper divisors (1572769).

124242431 is an equidigital number, since it uses as much as digits as its factorization.

124242431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572768.

The product of its digits is 1536, while the sum is 23.

The square root of 124242431 is about 11146.4088835822. The cubic root of 124242431 is about 498.9878605299.

Adding to 124242431 its reverse (134242421), we get a palindrome (258484852).

The spelling of 124242431 in words is "one hundred twenty-four million, two hundred forty-two thousand, four hundred thirty-one".