125840440 has 32 divisors (see below), whose sum is σ = 308882160. Its totient is φ = 45760000.

The previous prime is 125840419. The next prime is 125840447. The reversal of 125840440 is 44048521.

It is a junction number, because it is equal to n+sod(n) for n = 125840399 and 125840408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125840447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142561 + ... + 143440.

Almost surely, 2^125840440 is an apocalyptic number.

125840440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125840440 is an abundant number, since it is smaller than the sum of its proper divisors (183041720).

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

125840440 is a wasteful number, since it uses less digits than its factorization.

125840440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286023 (or 286019 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 125840440 is about 11217.8625415005. The cubic root of 125840440 is about 501.1180845768.

Adding to 125840440 its reverse (44048521), we get a palindrome (169888961).

The spelling of 125840440 in words is "one hundred twenty-five million, eight hundred forty thousand, four hundred forty".