140399136 has 48 divisors (see below), whose sum is σ = 409500000. Its totient is φ = 46799424.

The previous prime is 140399123. The next prime is 140399137. The reversal of 140399136 is 631993041.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 140399136.

It is not an unprimeable number, because it can be changed into a prime (140399137) 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, 80386 + ... + 82113.

It is an arithmetic number, because the mean of its divisors is an integer number (8531250).

Almost surely, 2^140399136 is an apocalyptic number.

140399136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

140399136 is an abundant number, since it is smaller than the sum of its proper divisors (269100864).

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

140399136 is a wasteful number, since it uses less digits than its factorization.

140399136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162518 (or 162504 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 140399136 is about 11849.0141362056. The cubic root of 140399136 is about 519.7423970619.

The spelling of 140399136 in words is "one hundred forty million, three hundred ninety-nine thousand, one hundred thirty-six".