124100421 has 4 divisors (see below), whose sum is σ = 165467232. Its totient is φ = 82733612.

The previous prime is 124100377. The next prime is 124100429. The reversal of 124100421 is 124001421.

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 124100421 - 2⁷ = 124100293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 124100421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124100429) 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, 20683401 + ... + 20683406.

It is an arithmetic number, because the mean of its divisors is an integer number (41366808).

Almost surely, 2^124100421 is an apocalyptic number.

It is an amenable number.

124100421 is a deficient number, since it is larger than the sum of its proper divisors (41366811).

124100421 is an equidigital number, since it uses as much as digits as its factorization.

124100421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41366810.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 124100421 is about 11140.0368491312. The cubic root of 124100421 is about 498.7976724678.

Adding to 124100421 its reverse (124001421), we get a palindrome (248101842).

The spelling of 124100421 in words is "one hundred twenty-four million, one hundred thousand, four hundred twenty-one".