124421421 has 8 divisors (see below), whose sum is σ = 173108160. Its totient is φ = 79341152.

The previous prime is 124421413. The next prime is 124421431. The reversal of 124421421 is 124124421.

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

It is a cyclic number.

It is not a de Polignac number, because 124421421 - 2³ = 124421413 is a prime.

It is a super-3 number, since 3×124421421³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124421431) 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, 901536 + ... + 901673.

It is an arithmetic number, because the mean of its divisors is an integer number (21638520).

Almost surely, 2^124421421 is an apocalyptic number.

It is an amenable number.

124421421 is a deficient number, since it is larger than the sum of its proper divisors (48686739).

124421421 is a wasteful number, since it uses less digits than its factorization.

124421421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803235.

The product of its digits is 512, while the sum is 21.

The square root of 124421421 is about 11154.4350372397. The cubic root of 124421421 is about 499.2273680280.

Adding to 124421421 its reverse (124124421), we get a palindrome (248545842).

The spelling of 124421421 in words is "one hundred twenty-four million, four hundred twenty-one thousand, four hundred twenty-one".