124045121 has 2 divisors, whose sum is σ = 124045122. Its totient is φ = 124045120.

The previous prime is 124045111. The next prime is 124045169. The reversal of 124045121 is 121540421.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75881521 + 48163600 = 8711^2 + 6940^2 .

It is a cyclic number.

It is not a de Polignac number, because 124045121 - 2¹⁰ = 124044097 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 124045093 and 124045102.

It is not a weakly prime, because it can be changed into another prime (124045111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62022560 + 62022561.

It is an arithmetic number, because the mean of its divisors is an integer number (62022561).

Almost surely, 2^124045121 is an apocalyptic number.

It is an amenable number.

124045121 is a deficient number, since it is larger than the sum of its proper divisors (1).

124045121 is an equidigital number, since it uses as much as digits as its factorization.

124045121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 124045121 is about 11137.5545340977. The cubic root of 124045121 is about 498.7235722372.

Adding to 124045121 its reverse (121540421), we get a palindrome (245585542).

The spelling of 124045121 in words is "one hundred twenty-four million, forty-five thousand, one hundred twenty-one".