140623159 has 4 divisors (see below), whose sum is σ = 140717016. Its totient is φ = 140529304.

The previous prime is 140623157. The next prime is 140623169. The reversal of 140623159 is 951326041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140623159 - 2¹ = 140623157 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140623159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140623157) 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, 44644 + ... + 47689.

It is an arithmetic number, because the mean of its divisors is an integer number (35179254).

Almost surely, 2^140623159 is an apocalyptic number.

140623159 is a deficient number, since it is larger than the sum of its proper divisors (93857).

140623159 is an equidigital number, since it uses as much as digits as its factorization.

140623159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93856.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 140623159 is about 11858.4636020017. The cubic root of 140623159 is about 520.0186864587.

The spelling of 140623159 in words is "one hundred forty million, six hundred twenty-three thousand, one hundred fifty-nine".