125129493 has 24 divisors (see below), whose sum is σ = 183526200. Its totient is φ = 82145664.

The previous prime is 125129491. The next prime is 125129507. The reversal of 125129493 is 394921521.

It can be written as a sum of positive squares in 4 ways, for example, as 30008484 + 95121009 = 5478^2 + 9753^2 .

It is not a de Polignac number, because 125129493 - 2¹ = 125129491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125129491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 224371 + ... + 224927.

It is an arithmetic number, because the mean of its divisors is an integer number (7646925).

Almost surely, 2^125129493 is an apocalyptic number.

It is an amenable number.

125129493 is a deficient number, since it is larger than the sum of its proper divisors (58396707).

125129493 is a wasteful number, since it uses less digits than its factorization.

125129493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901 (or 898 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 125129493 is about 11186.1294914729. The cubic root of 125129493 is about 500.1725977465.

The spelling of 125129493 in words is "one hundred twenty-five million, one hundred twenty-nine thousand, four hundred ninety-three".