42097697 has 2 divisors, whose sum is σ = 42097698. Its totient is φ = 42097696.

The previous prime is 42097691. The next prime is 42097723. The reversal of 42097697 is 79679024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41267776 + 829921 = 6424^2 + 911^2 .

It is a cyclic number.

It is not a de Polignac number, because 42097697 - 2⁶ = 42097633 is a prime.

It is not a weakly prime, because it can be changed into another prime (42097691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21048848 + 21048849.

It is an arithmetic number, because the mean of its divisors is an integer number (21048849).

Almost surely, 2^42097697 is an apocalyptic number.

It is an amenable number.

42097697 is a deficient number, since it is larger than the sum of its proper divisors (1).

42097697 is an equidigital number, since it uses as much as digits as its factorization.

42097697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 42097697 is about 6488.2738074160. The cubic root of 42097697 is about 347.8719775047.

The spelling of 42097697 in words is "forty-two million, ninety-seven thousand, six hundred ninety-seven".