140139236 has 12 divisors (see below), whose sum is σ = 250947312. Its totient is φ = 68440008.

The previous prime is 140139203. The next prime is 140139319. The reversal of 140139236 is 632931041.

It is a junction number, because it is equal to n+sod(n) for n = 140139199 and 140139208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407210 + ... + 407553.

It is an arithmetic number, because the mean of its divisors is an integer number (20912276).

Almost surely, 2^140139236 is an apocalyptic number.

It is an amenable number.

140139236 is a deficient number, since it is larger than the sum of its proper divisors (110808076).

140139236 is a wasteful number, since it uses less digits than its factorization.

140139236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814810 (or 814808 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 140139236 is about 11838.0418988953. The cubic root of 140139236 is about 519.4214917475.

The spelling of 140139236 in words is "one hundred forty million, one hundred thirty-nine thousand, two hundred thirty-six".