124023221 has 4 divisors (see below), whose sum is σ = 141740832. Its totient is φ = 106305612.

The previous prime is 124023217. The next prime is 124023283. The reversal of 124023221 is 122320421.

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 not a de Polignac number, because 124023221 - 2² = 124023217 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 124023221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124023821) 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, 8858795 + ... + 8858808.

It is an arithmetic number, because the mean of its divisors is an integer number (35435208).

Almost surely, 2^124023221 is an apocalyptic number.

It is an amenable number.

124023221 is a deficient number, since it is larger than the sum of its proper divisors (17717611).

124023221 is an equidigital number, since it uses as much as digits as its factorization.

124023221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17717610.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 124023221 is about 11136.5713305308. The cubic root of 124023221 is about 498.6942208502.

Adding to 124023221 its reverse (122320421), we get a palindrome (246343642).

The spelling of 124023221 in words is "one hundred twenty-four million, twenty-three thousand, two hundred twenty-one".