140540656 has 10 divisors (see below), whose sum is σ = 272297552. Its totient is φ = 70270320.

The previous prime is 140540651. The next prime is 140540657. The reversal of 140540656 is 656045041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140540651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4391880 + ... + 4391911.

Almost surely, 2^140540656 is an apocalyptic number.

140540656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

140540656 is a deficient number, since it is larger than the sum of its proper divisors (131756896).

140540656 is an equidigital number, since it uses as much as digits as its factorization.

140540656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8783799 (or 8783793 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 140540656 is about 11854.9844369362. The cubic root of 140540656 is about 519.9169689912.

Adding to 140540656 its reverse (656045041), we get a palindrome (796585697).

The spelling of 140540656 in words is "one hundred forty million, five hundred forty thousand, six hundred fifty-six".