140254139 has 4 divisors (see below), whose sum is σ = 140343024. Its totient is φ = 140165256.

The previous prime is 140254123. The next prime is 140254193. The reversal of 140254139 is 931452041.

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 140254139 - 2⁴ = 140254123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140284139) 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, 42032 + ... + 45245.

It is an arithmetic number, because the mean of its divisors is an integer number (35085756).

Almost surely, 2^140254139 is an apocalyptic number.

140254139 is a deficient number, since it is larger than the sum of its proper divisors (88885).

140254139 is an equidigital number, since it uses as much as digits as its factorization.

140254139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88884.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 140254139 is about 11842.8940297547. The cubic root of 140254139 is about 519.5634143692.

The spelling of 140254139 in words is "one hundred forty million, two hundred fifty-four thousand, one hundred thirty-nine".