140212279 has 2 divisors, whose sum is σ = 140212280. Its totient is φ = 140212278.

The previous prime is 140212249. The next prime is 140212283. The reversal of 140212279 is 972212041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140212279 - 2²⁷ = 5994551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140212249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70106139 + 70106140.

It is an arithmetic number, because the mean of its divisors is an integer number (70106140).

Almost surely, 2^140212279 is an apocalyptic number.

140212279 is a deficient number, since it is larger than the sum of its proper divisors (1).

140212279 is an equidigital number, since it uses as much as digits as its factorization.

140212279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 140212279 is about 11841.1265933610. The cubic root of 140212279 is about 519.5117199028.

The spelling of 140212279 in words is "one hundred forty million, two hundred twelve thousand, two hundred seventy-nine".