124204121 has 4 divisors (see below), whose sum is σ = 130741200. Its totient is φ = 117667044.

The previous prime is 124204111. The next prime is 124204123. The reversal of 124204121 is 121402421.

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 124204121 - 2¹⁸ = 123941977 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 124204121.

It is not an unprimeable number, because it can be changed into a prime (124204123) 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, 3268511 + ... + 3268548.

It is an arithmetic number, because the mean of its divisors is an integer number (32685300).

Almost surely, 2^124204121 is an apocalyptic number.

It is an amenable number.

124204121 is a deficient number, since it is larger than the sum of its proper divisors (6537079).

124204121 is an equidigital number, since it uses as much as digits as its factorization.

124204121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6537078.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 124204121 is about 11144.6902603886. The cubic root of 124204121 is about 498.9365678275.

Adding to 124204121 its reverse (121402421), we get a palindrome (245606542).

The spelling of 124204121 in words is "one hundred twenty-four million, two hundred four thousand, one hundred twenty-one".