1000140239 has 4 divisors (see below), whose sum is σ = 1143017424. Its totient is φ = 857263056.

The previous prime is 1000140233. The next prime is 1000140283. The reversal of 1000140239 is 9320410001.

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 1000140239 - 2⁸ = 1000139983 is a prime.

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 1000140239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000140233) 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, 71438582 + ... + 71438595.

It is an arithmetic number, because the mean of its divisors is an integer number (285754356).

Almost surely, 2^1000140239 is an apocalyptic number.

1000140239 is a deficient number, since it is larger than the sum of its proper divisors (142877185).

1000140239 is an equidigital number, since it uses as much as digits as its factorization.

1000140239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142877184.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1000140239 is about 31624.9938972326. The cubic root of 1000140239 is about 1000.0467441483.

The spelling of 1000140239 in words is "one billion, one hundred forty thousand, two hundred thirty-nine".