76742147 has 2 divisors, whose sum is σ = 76742148. Its totient is φ = 76742146.

The previous prime is 76742137. The next prime is 76742153. The reversal of 76742147 is 74124767.

It is a strong prime.

It is an emirp because it is prime and its reverse (74124767) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76742147 - 2⁸ = 76741891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76742147.

It is not a weakly prime, because it can be changed into another prime (76742137) 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, 38371073 + 38371074.

It is an arithmetic number, because the mean of its divisors is an integer number (38371074).

Almost surely, 2^76742147 is an apocalyptic number.

76742147 is a deficient number, since it is larger than the sum of its proper divisors (1).

76742147 is an equidigital number, since it uses as much as digits as its factorization.

76742147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65856, while the sum is 38.

The square root of 76742147 is about 8760.2595281190. The cubic root of 76742147 is about 424.9566682465.

The spelling of 76742147 in words is "seventy-six million, seven hundred forty-two thousand, one hundred forty-seven".