140015279 has 2 divisors, whose sum is σ = 140015280. Its totient is φ = 140015278.

The previous prime is 140015243. The next prime is 140015297. The reversal of 140015279 is 972510041.

Together with next prime (140015297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140015279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140015879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70007639 + 70007640.

It is an arithmetic number, because the mean of its divisors is an integer number (70007640).

Almost surely, 2^140015279 is an apocalyptic number.

140015279 is a deficient number, since it is larger than the sum of its proper divisors (1).

140015279 is an equidigital number, since it uses as much as digits as its factorization.

140015279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 140015279 is about 11832.8052041771. The cubic root of 140015279 is about 519.2682990497.

The spelling of 140015279 in words is "one hundred forty million, fifteen thousand, two hundred seventy-nine".