78074023 has 2 divisors, whose sum is σ = 78074024. Its totient is φ = 78074022.

The previous prime is 78073999. The next prime is 78074071. The reversal of 78074023 is 32047087.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78074023 - 2²¹ = 75976871 is a prime.

It is equal to p_4563634 and since 78074023 and 4563634 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78074123) 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, 39037011 + 39037012.

It is an arithmetic number, because the mean of its divisors is an integer number (39037012).

Almost surely, 2^78074023 is an apocalyptic number.

78074023 is a deficient number, since it is larger than the sum of its proper divisors (1).

78074023 is an equidigital number, since it uses as much as digits as its factorization.

78074023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 78074023 is about 8835.9505996808. The cubic root of 78074023 is about 427.4009856983.

The spelling of 78074023 in words is "seventy-eight million, seventy-four thousand, twenty-three".