140105579 has 2 divisors, whose sum is σ = 140105580. Its totient is φ = 140105578.

The previous prime is 140105561. The next prime is 140105587. The reversal of 140105579 is 975501041.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140105579 is a prime.

It is not a weakly prime, because it can be changed into another prime (140105519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70052789 + 70052790.

It is an arithmetic number, because the mean of its divisors is an integer number (70052790).

Almost surely, 2^140105579 is an apocalyptic number.

140105579 is a deficient number, since it is larger than the sum of its proper divisors (1).

140105579 is an equidigital number, since it uses as much as digits as its factorization.

140105579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 140105579 is about 11836.6202524200. The cubic root of 140105579 is about 519.3799055618.

The spelling of 140105579 in words is "one hundred forty million, one hundred five thousand, five hundred seventy-nine".