140156439 has 8 divisors (see below), whose sum is σ = 187084032. Its totient is φ = 93333240.

The previous prime is 140156437. The next prime is 140156461. The reversal of 140156439 is 934651041.

140156439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 140156439 - 2¹ = 140156437 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140156431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22909 + ... + 28374.

It is an arithmetic number, because the mean of its divisors is an integer number (23385504).

Almost surely, 2^140156439 is an apocalyptic number.

140156439 is a deficient number, since it is larger than the sum of its proper divisors (46927593).

140156439 is an equidigital number, since it uses as much as digits as its factorization.

140156439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52197.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 140156439 is about 11838.7684748034. The cubic root of 140156439 is about 519.4427449967.

The spelling of 140156439 in words is "one hundred forty million, one hundred fifty-six thousand, four hundred thirty-nine".