42678697 has 2 divisors, whose sum is σ = 42678698. Its totient is φ = 42678696.

The previous prime is 42678689. The next prime is 42678737. The reversal of 42678697 is 79687624.

42678697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37589161 + 5089536 = 6131^2 + 2256^2 .

It is a cyclic number.

It is not a de Polignac number, because 42678697 - 2³ = 42678689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42678697.

It is not a weakly prime, because it can be changed into another prime (42678607) 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, 21339348 + 21339349.

It is an arithmetic number, because the mean of its divisors is an integer number (21339349).

Almost surely, 2^42678697 is an apocalyptic number.

It is an amenable number.

42678697 is a deficient number, since it is larger than the sum of its proper divisors (1).

42678697 is an equidigital number, since it uses as much as digits as its factorization.

42678697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 49.

The square root of 42678697 is about 6532.8934630836. The cubic root of 42678697 is about 349.4650248839.

The spelling of 42678697 in words is "forty-two million, six hundred seventy-eight thousand, six hundred ninety-seven".