140140236 has 12 divisors (see below), whose sum is σ = 326993912. Its totient is φ = 46713408.

The previous prime is 140140211. The next prime is 140140237. The reversal of 140140236 is 632041041.

140140236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×140140236² = 39278571492271392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140140237) 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, 5839165 + ... + 5839188.

Almost surely, 2^140140236 is an apocalyptic number.

It is an amenable number.

140140236 is an abundant number, since it is smaller than the sum of its proper divisors (186853676).

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

140140236 is a wasteful number, since it uses less digits than its factorization.

140140236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11678360 (or 11678358 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 140140236 is about 11838.0841355348. The cubic root of 140140236 is about 519.4227272337.

Adding to 140140236 its reverse (632041041), we get a palindrome (772181277).

The spelling of 140140236 in words is "one hundred forty million, one hundred forty thousand, two hundred thirty-six".