140036291 has 4 divisors (see below), whose sum is σ = 140170584. Its totient is φ = 139902000.

The previous prime is 140036263. The next prime is 140036311. The reversal of 140036291 is 192630041.

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

It is a cyclic number.

It is not a de Polignac number, because 140036291 - 2¹⁰ = 140035267 is a prime.

It is a super-2 number, since 2×140036291² = 39220325594073362, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140036291.

It is not an unprimeable number, because it can be changed into a prime (140036591) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 65570 + ... + 67671.

It is an arithmetic number, because the mean of its divisors is an integer number (35042646).

Almost surely, 2^140036291 is an apocalyptic number.

140036291 is a deficient number, since it is larger than the sum of its proper divisors (134293).

140036291 is a wasteful number, since it uses less digits than its factorization.

140036291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134292.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 140036291 is about 11833.6930414812. The cubic root of 140036291 is about 519.2942731668.

The spelling of 140036291 in words is "one hundred forty million, thirty-six thousand, two hundred ninety-one".