125346640 has 40 divisors (see below), whose sum is σ = 300837888. Its totient is φ = 48520320.

The previous prime is 125346623. The next prime is 125346647. The reversal of 125346640 is 46643521.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125346647) 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 in 7 ways as a sum of consecutive naturals, for example, 22792 + ... + 27751.

Almost surely, 2^125346640 is an apocalyptic number.

125346640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125346640 is an abundant number, since it is smaller than the sum of its proper divisors (175491248).

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

125346640 is a wasteful number, since it uses less digits than its factorization.

125346640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50587 (or 50581 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 125346640 is about 11195.8313670759. The cubic root of 125346640 is about 500.4617600906.

The spelling of 125346640 in words is "one hundred twenty-five million, three hundred forty-six thousand, six hundred forty".