140726813 has 2 divisors, whose sum is σ = 140726814. Its totient is φ = 140726812.

The previous prime is 140726791. The next prime is 140726827. The reversal of 140726813 is 318627041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94731289 + 45995524 = 9733^2 + 6782^2 .

It is an emirp because it is prime and its reverse (318627041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140726813 - 2⁸ = 140726557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140726813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140726843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70363406 + 70363407.

It is an arithmetic number, because the mean of its divisors is an integer number (70363407).

Almost surely, 2^140726813 is an apocalyptic number.

It is an amenable number.

140726813 is a deficient number, since it is larger than the sum of its proper divisors (1).

140726813 is an equidigital number, since it uses as much as digits as its factorization.

140726813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 140726813 is about 11862.8332619151. The cubic root of 140726813 is about 520.1464244949.

The spelling of 140726813 in words is "one hundred forty million, seven hundred twenty-six thousand, eight hundred thirteen".