140420656 has 10 divisors (see below), whose sum is σ = 272065052. Its totient is φ = 70210320.

The previous prime is 140420627. The next prime is 140420713. The reversal of 140420656 is 656024041.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4388130 + ... + 4388161.

Almost surely, 2^140420656 is an apocalyptic number.

140420656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

140420656 is a deficient number, since it is larger than the sum of its proper divisors (131644396).

140420656 is an equidigital number, since it uses as much as digits as its factorization.

140420656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8776299 (or 8776293 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 140420656 is about 11849.9221938374. The cubic root of 140420656 is about 519.7689506084.

Adding to 140420656 its reverse (656024041), we get a palindrome (796444697).

The spelling of 140420656 in words is "one hundred forty million, four hundred twenty thousand, six hundred fifty-six".