140125986 has 216 divisors, whose sum is σ = 422201052. Its totient is φ = 33264000.

The previous prime is 140125907. The next prime is 140125991. The reversal of 140125986 is 689521041.

It can be written as a sum of positive squares in 2 ways, for example, as 138791961 + 1334025 = 11781^2 + 1155^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 140125986.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 1387336 + ... + 1387436.

Almost surely, 2^140125986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140125986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211100526).

140125986 is an abundant number, since it is smaller than the sum of its proper divisors (282075066).

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

140125986 is a wasteful number, since it uses less digits than its factorization.

140125986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 140125986 is about 11837.4822491947. The cubic root of 140125986 is about 519.4051210011.

The spelling of 140125986 in words is "one hundred forty million, one hundred twenty-five thousand, nine hundred eighty-six".