134642279 has 2 divisors, whose sum is σ = 134642280. Its totient is φ = 134642278.

The previous prime is 134642243. The next prime is 134642281. The reversal of 134642279 is 972246431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134642279 is a prime.

It is a Sophie Germain prime.

Together with 134642281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134641279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67321139 + 67321140.

It is an arithmetic number, because the mean of its divisors is an integer number (67321140).

Almost surely, 2^134642279 is an apocalyptic number.

134642279 is a deficient number, since it is larger than the sum of its proper divisors (1).

134642279 is an equidigital number, since it uses as much as digits as its factorization.

134642279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 38.

The square root of 134642279 is about 11603.5459666431. The cubic root of 134642279 is about 512.5392763078.

The spelling of 134642279 in words is "one hundred thirty-four million, six hundred forty-two thousand, two hundred seventy-nine".