125139860 has 12 divisors (see below), whose sum is σ = 262793748. Its totient is φ = 50055936.

The previous prime is 125139857. The next prime is 125139863. The reversal of 125139860 is 68931521.

It is an interprime number because it is at equal distance from previous prime (125139857) and next prime (125139863).

It can be written as a sum of positive squares in 2 ways, for example, as 88585744 + 36554116 = 9412^2 + 6046^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 125139860.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125139863) by changing a digit.

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, 3128477 + ... + 3128516.

It is an arithmetic number, because the mean of its divisors is an integer number (21899479).

Almost surely, 2^125139860 is an apocalyptic number.

125139860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125139860 is an abundant number, since it is smaller than the sum of its proper divisors (137653888).

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

125139860 is a wasteful number, since it uses less digits than its factorization.

125139860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6257002 (or 6257000 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 125139860 is about 11186.5928682508. The cubic root of 125139860 is about 500.1864104936.

The spelling of 125139860 in words is "one hundred twenty-five million, one hundred thirty-nine thousand, eight hundred sixty".