125460021 has 16 divisors (see below), whose sum is σ = 176834240. Its totient is φ = 78900480.

The previous prime is 125459993. The next prime is 125460047. The reversal of 125460021 is 120064521.

It is not a de Polignac number, because 125460021 - 2⁵ = 125459989 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 125460021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125462021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9171 + ... + 18303.

It is an arithmetic number, because the mean of its divisors is an integer number (11052140).

Almost surely, 2^125460021 is an apocalyptic number.

It is an amenable number.

125460021 is a deficient number, since it is larger than the sum of its proper divisors (51374219).

125460021 is a wasteful number, since it uses less digits than its factorization.

125460021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9396.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 125460021 is about 11200.8937589819. The cubic root of 125460021 is about 500.6126104437.

The spelling of 125460021 in words is "one hundred twenty-five million, four hundred sixty thousand, twenty-one".