79142111 has 2 divisors, whose sum is σ = 79142112. Its totient is φ = 79142110.

The previous prime is 79142053. The next prime is 79142113. The reversal of 79142111 is 11124197.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79142111 - 2⁶ = 79142047 is a prime.

Together with 79142113, 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 (79142113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39571055 + 39571056.

It is an arithmetic number, because the mean of its divisors is an integer number (39571056).

Almost surely, 2^79142111 is an apocalyptic number.

79142111 is a deficient number, since it is larger than the sum of its proper divisors (1).

79142111 is an equidigital number, since it uses as much as digits as its factorization.

79142111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 26.

The square root of 79142111 is about 8896.1851936659. The cubic root of 79142111 is about 429.3411778725.

The spelling of 79142111 in words is "seventy-nine million, one hundred forty-two thousand, one hundred eleven".