42697073 has 2 divisors, whose sum is σ = 42697074. Its totient is φ = 42697072.

The previous prime is 42697063. The next prime is 42697079. The reversal of 42697073 is 37079624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39037504 + 3659569 = 6248^2 + 1913^2 .

It is a cyclic number.

It is not a de Polignac number, because 42697073 - 2⁸ = 42696817 is a prime.

It is not a weakly prime, because it can be changed into another prime (42697079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21348536 + 21348537.

It is an arithmetic number, because the mean of its divisors is an integer number (21348537).

Almost surely, 2^42697073 is an apocalyptic number.

It is an amenable number.

42697073 is a deficient number, since it is larger than the sum of its proper divisors (1).

42697073 is an equidigital number, since it uses as much as digits as its factorization.

42697073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 42697073 is about 6534.2997329477. The cubic root of 42697073 is about 349.5151736177.

The spelling of 42697073 in words is "forty-two million, six hundred ninety-seven thousand, seventy-three".