125104121 has 2 divisors, whose sum is σ = 125104122. Its totient is φ = 125104120.

The previous prime is 125104117. The next prime is 125104171. The reversal of 125104121 is 121401521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124634896 + 469225 = 11164^2 + 685^2 .

It is a cyclic number.

It is not a de Polignac number, because 125104121 - 2² = 125104117 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125104121.

It is not a weakly prime, because it can be changed into another prime (125104171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62552060 + 62552061.

It is an arithmetic number, because the mean of its divisors is an integer number (62552061).

Almost surely, 2^125104121 is an apocalyptic number.

It is an amenable number.

125104121 is a deficient number, since it is larger than the sum of its proper divisors (1).

125104121 is an equidigital number, since it uses as much as digits as its factorization.

125104121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 125104121 is about 11184.9953509154. The cubic root of 125104121 is about 500.1387894714.

Adding to 125104121 its reverse (121401521), we get a palindrome (246505642).

The spelling of 125104121 in words is "one hundred twenty-five million, one hundred four thousand, one hundred twenty-one".