124451421 has 4 divisors (see below), whose sum is σ = 165935232. Its totient is φ = 82967612.

The previous prime is 124451381. The next prime is 124451423. The reversal of 124451421 is 124154421.

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: 124154421 = 3 ⋅41384807.

It is a cyclic number.

It is not a de Polignac number, because 124451421 - 2⁶ = 124451357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 124451391 and 124451400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124451423) 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, 20741901 + ... + 20741906.

It is an arithmetic number, because the mean of its divisors is an integer number (41483808).

Almost surely, 2^124451421 is an apocalyptic number.

It is an amenable number.

124451421 is a deficient number, since it is larger than the sum of its proper divisors (41483811).

124451421 is an equidigital number, since it uses as much as digits as its factorization.

124451421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41483810.

The product of its digits is 1280, while the sum is 24.

The square root of 124451421 is about 11155.7797127767. The cubic root of 124451421 is about 499.2674887118.

The spelling of 124451421 in words is "one hundred twenty-four million, four hundred fifty-one thousand, four hundred twenty-one".