125399340 has 240 divisors, whose sum is σ = 444939264. Its totient is φ = 29289600.

The previous prime is 125399333. The next prime is 125399359. The reversal of 125399340 is 43993521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 125399295 and 125399304.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 552307 + ... + 552533.

Almost surely, 2^125399340 is an apocalyptic number.

125399340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125399340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222469632).

125399340 is an abundant number, since it is smaller than the sum of its proper divisors (319539924).

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

125399340 is a wasteful number, since it uses less digits than its factorization.

125399340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 125399340 is about 11198.1846743122. The cubic root of 125399340 is about 500.5318873245.

The spelling of 125399340 in words is "one hundred twenty-five million, three hundred ninety-nine thousand, three hundred forty".