125040040 has 16 divisors (see below), whose sum is σ = 281340180. Its totient is φ = 50016000.

The previous prime is 125040031. The next prime is 125040067. The reversal of 125040040 is 40040521.

It can be written as a sum of positive squares in 2 ways, for example, as 125037124 + 2916 = 11182^2 + 54^2 .

It is a junction number, because it is equal to n+sod(n) for n = 125039996 and 125040023.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1562961 + ... + 1563040.

Almost surely, 2^125040040 is an apocalyptic number.

125040040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125040040 is an abundant number, since it is smaller than the sum of its proper divisors (156300140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125040040 is a wasteful number, since it uses less digits than its factorization.

125040040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3126012 (or 3126008 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 125040040 is about 11182.1303873636. The cubic root of 125040040 is about 500.0533809674.

Adding to 125040040 its reverse (40040521), we get a palindrome (165080561).

The spelling of 125040040 in words is "one hundred twenty-five million, forty thousand, forty".