140656442 has 8 divisors (see below), whose sum is σ = 211153716. Its totient is φ = 70271872.

The previous prime is 140656441. The next prime is 140656469. The reversal of 140656442 is 244656041.

140656442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 123854641 + 16801801 = 11129^2 + 4099^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 140656399 and 140656408.

It is not an unprimeable number, because it can be changed into a prime (140656441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24983 + ... + 30090.

Almost surely, 2^140656442 is an apocalyptic number.

140656442 is a deficient number, since it is larger than the sum of its proper divisors (70497274).

140656442 is a wasteful number, since it uses less digits than its factorization.

140656442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56352.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 140656442 is about 11859.8668626591. The cubic root of 140656442 is about 520.0597096129.

The spelling of 140656442 in words is "one hundred forty million, six hundred fifty-six thousand, four hundred forty-two".