140042636 has 12 divisors (see below), whose sum is σ = 249228840. Its totient is φ = 68834400.

The previous prime is 140042627. The next prime is 140042659. The reversal of 140042636 is 636240041.

140042636 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×140042636² = 39223879795656992, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 296465 + ... + 296936.

It is an arithmetic number, because the mean of its divisors is an integer number (20769070).

Almost surely, 2^140042636 is an apocalyptic number.

It is an amenable number.

140042636 is a deficient number, since it is larger than the sum of its proper divisors (109186204).

140042636 is a wasteful number, since it uses less digits than its factorization.

140042636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593464 (or 593462 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 140042636 is about 11833.9611288866. The cubic root of 140042636 is about 519.3021160681.

Adding to 140042636 its reverse (636240041), we get a palindrome (776282677).

The spelling of 140042636 in words is "one hundred forty million, forty-two thousand, six hundred thirty-six".