140656438 has 32 divisors (see below), whose sum is σ = 237504960. Its totient is φ = 62025600.

The previous prime is 140656433. The next prime is 140656441. The reversal of 140656438 is 834656041.

It is a happy number.

140656438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 140656397 and 140656406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140656433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75231 + ... + 77077.

It is an arithmetic number, because the mean of its divisors is an integer number (7422030).

Almost surely, 2^140656438 is an apocalyptic number.

140656438 is a deficient number, since it is larger than the sum of its proper divisors (96848522).

140656438 is a wasteful number, since it uses less digits than its factorization.

140656438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1992.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 140656438 is about 11859.8666940232. The cubic root of 140656438 is about 520.0597046831.

It can be divided in two parts, 14065 and 6438, that added together give a triangular number (20503 = T₂₀₂).

The spelling of 140656438 in words is "one hundred forty million, six hundred fifty-six thousand, four hundred thirty-eight".