140403239 has 4 divisors (see below), whose sum is σ = 145244760. Its totient is φ = 135561720.

The previous prime is 140403233. The next prime is 140403269. The reversal of 140403239 is 932304041.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140403239 is a prime.

It is a super-3 number, since 3×140403239³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140403233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2420717 + ... + 2420774.

It is an arithmetic number, because the mean of its divisors is an integer number (36311190).

Almost surely, 2^140403239 is an apocalyptic number.

140403239 is a deficient number, since it is larger than the sum of its proper divisors (4841521).

140403239 is an equidigital number, since it uses as much as digits as its factorization.

140403239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4841520.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 140403239 is about 11849.1872717077. The cubic root of 140403239 is about 519.7474599665.

The spelling of 140403239 in words is "one hundred forty million, four hundred three thousand, two hundred thirty-nine".