140123956 has 24 divisors (see below), whose sum is σ = 280937216. Its totient is φ = 59905440.

The previous prime is 140123941. The next prime is 140123957. The reversal of 140123956 is 659321041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140123957) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5845 + ... + 17731.

Almost surely, 2^140123956 is an apocalyptic number.

It is an amenable number.

140123956 is an abundant number, since it is smaller than the sum of its proper divisors (140813260).

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

140123956 is a wasteful number, since it uses less digits than its factorization.

140123956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12319 (or 12317 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 140123956 is about 11837.3965042994. The cubic root of 140123956 is about 519.4026127881.

Adding to 140123956 its reverse (659321041), we get a palindrome (799444997).

The spelling of 140123956 in words is "one hundred forty million, one hundred twenty-three thousand, nine hundred fifty-six".