140140056 has 64 divisors (see below), whose sum is σ = 407980800. Its totient is φ = 39282048.

The previous prime is 140140043. The next prime is 140140073. The reversal of 140140056 is 650041041.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1035 + ... + 16773.

It is an arithmetic number, because the mean of its divisors is an integer number (6374700).

Almost surely, 2^140140056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140140056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203990400).

140140056 is an abundant number, since it is smaller than the sum of its proper divisors (267840744).

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

140140056 is a wasteful number, since it uses less digits than its factorization.

140140056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15808 (or 15804 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 140140056 is about 11838.0765329508. The cubic root of 140140056 is about 519.4225048466.

Adding to 140140056 its reverse (650041041), we get a palindrome (790181097).

The spelling of 140140056 in words is "one hundred forty million, one hundred forty thousand, fifty-six".