124131121 has 4 divisors (see below), whose sum is σ = 125360244. Its totient is φ = 122902000.

The previous prime is 124131097. The next prime is 124131131. The reversal of 124131121 is 121131421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67881121 + 56250000 = 8239^2 + 7500^2 .

It is a cyclic number.

It is not a de Polignac number, because 124131121 - 2²¹ = 122033969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124131095 and 124131104.

It is not an unprimeable number, because it can be changed into a prime (124131131) 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, 614410 + ... + 614611.

It is an arithmetic number, because the mean of its divisors is an integer number (31340061).

Almost surely, 2^124131121 is an apocalyptic number.

It is an amenable number.

124131121 is a deficient number, since it is larger than the sum of its proper divisors (1229123).

124131121 is a wasteful number, since it uses less digits than its factorization.

124131121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229122.

The product of its digits is 48, while the sum is 16.

The square root of 124131121 is about 11141.4146767814. The cubic root of 124131121 is about 498.8387999834.

Adding to 124131121 its reverse (121131421), we get a palindrome (245262542).

The spelling of 124131121 in words is "one hundred twenty-four million, one hundred thirty-one thousand, one hundred twenty-one".