140211656 has 32 divisors (see below), whose sum is σ = 284792760. Its totient is φ = 64330752.

The previous prime is 140211647. The next prime is 140211661. The reversal of 140211656 is 656112041.

140211656 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 140043556 + 168100 = 11834^2 + 410^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14096 + ... + 21888.

Almost surely, 2^140211656 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 140211656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142396380).

140211656 is an abundant number, since it is smaller than the sum of its proper divisors (144581104).

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

140211656 is a wasteful number, since it uses less digits than its factorization.

140211656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7985 (or 7981 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 140211656 is about 11841.1002867132. The cubic root of 140211656 is about 519.5109504593.

Adding to 140211656 its reverse (656112041), we get a palindrome (796323697).

The spelling of 140211656 in words is "one hundred forty million, two hundred eleven thousand, six hundred fifty-six".