140136365 has 4 divisors (see below), whose sum is σ = 168163644. Its totient is φ = 112109088.

The previous prime is 140136361. The next prime is 140136371. The reversal of 140136365 is 563631041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 101223721 + 38912644 = 10061^2 + 6238^2 .

It is a cyclic number.

It is not a de Polignac number, because 140136365 - 2² = 140136361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140136361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14013632 + ... + 14013641.

It is an arithmetic number, because the mean of its divisors is an integer number (42040911).

Almost surely, 2^140136365 is an apocalyptic number.

It is an amenable number.

140136365 is a deficient number, since it is larger than the sum of its proper divisors (28027279).

140136365 is an equidigital number, since it uses as much as digits as its factorization.

140136365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28027278.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 140136365 is about 11837.9206366659. The cubic root of 140136365 is about 519.4179446341.

The spelling of 140136365 in words is "one hundred forty million, one hundred thirty-six thousand, three hundred sixty-five".