124312421 has 8 divisors (see below), whose sum is σ = 131431200. Its totient is φ = 117251280.

The previous prime is 124312417. The next prime is 124312423. The reversal of 124312421 is 124213421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 124312421 - 2² = 124312417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 124312393 and 124312402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124312423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9935 + ... + 18636.

It is an arithmetic number, because the mean of its divisors is an integer number (16428900).

Almost surely, 2^124312421 is an apocalyptic number.

It is an amenable number.

124312421 is a deficient number, since it is larger than the sum of its proper divisors (7118779).

124312421 is a wasteful number, since it uses less digits than its factorization.

124312421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28819.

The product of its digits is 384, while the sum is 20.

The square root of 124312421 is about 11149.5480177449. The cubic root of 124312421 is about 499.0815419025.

Adding to 124312421 its reverse (124213421), we get a palindrome (248525842).

The spelling of 124312421 in words is "one hundred twenty-four million, three hundred twelve thousand, four hundred twenty-one".