125461121 has 2 divisors, whose sum is σ = 125461122. Its totient is φ = 125461120.

The previous prime is 125461111. The next prime is 125461151. The reversal of 125461121 is 121164521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93876721 + 31584400 = 9689^2 + 5620^2 .

It is an emirp because it is prime and its reverse (121164521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125461121 - 2²⁶ = 58352257 is a prime.

It is not a weakly prime, because it can be changed into another prime (125461111) 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, 62730560 + 62730561.

It is an arithmetic number, because the mean of its divisors is an integer number (62730561).

Almost surely, 2^125461121 is an apocalyptic number.

It is an amenable number.

125461121 is a deficient number, since it is larger than the sum of its proper divisors (1).

125461121 is an equidigital number, since it uses as much as digits as its factorization.

125461121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480, while the sum is 23.

The square root of 125461121 is about 11200.9428620987. The cubic root of 125461121 is about 500.6140735187.

The spelling of 125461121 in words is "one hundred twenty-five million, four hundred sixty-one thousand, one hundred twenty-one".