13121159 has 2 divisors, whose sum is σ = 13121160. Its totient is φ = 13121158.
The previous prime is 13121117. The next prime is 13121203. The reversal of 13121159 is 95112131.
It is a weak prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-13121159 is a prime.
It is a Sophie Germain prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (13127159) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560579 + 6560580.
It is an arithmetic number, because the mean of its divisors is an integer number (6560580).
Almost surely, 213121159 is an apocalyptic number.
13121159 is a deficient number, since it is larger than the sum of its proper divisors (1).
13121159 is an equidigital number, since it uses as much as digits as its factorization.
13121159 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 270, while the sum is 23.
The square root of 13121159 is about 3622.3140393953. The cubic root of 13121159 is about 235.8616864056.
The spelling of 13121159 in words is "thirteen million, one hundred twenty-one thousand, one hundred fifty-nine".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.063 sec. • engine limits •