124086421 has 4 divisors (see below), whose sum is σ = 124154752. Its totient is φ = 124018092.

The previous prime is 124086401. The next prime is 124086427. The reversal of 124086421 is 124680421.

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: 124680421 = 8629 ⋅14449.

It is a cyclic number.

It is not a de Polignac number, because 124086421 - 2²¹ = 121989269 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 124086421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124086427) 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, 31365 + ... + 35098.

It is an arithmetic number, because the mean of its divisors is an integer number (31038688).

Almost surely, 2^124086421 is an apocalyptic number.

It is an amenable number.

124086421 is a deficient number, since it is larger than the sum of its proper divisors (68331).

124086421 is an equidigital number, since it uses as much as digits as its factorization.

124086421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68330.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 124086421 is about 11139.4084672392. The cubic root of 124086421 is about 498.7789149971.

The spelling of 124086421 in words is "one hundred twenty-four million, eighty-six thousand, four hundred twenty-one".