42295217 has 2 divisors, whose sum is σ = 42295218. Its totient is φ = 42295216.

The previous prime is 42295193. The next prime is 42295237. The reversal of 42295217 is 71259224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21492496 + 20802721 = 4636^2 + 4561^2 .

It is a cyclic number.

It is not a de Polignac number, because 42295217 - 2¹⁴ = 42278833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42295237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21147608 + 21147609.

It is an arithmetic number, because the mean of its divisors is an integer number (21147609).

Almost surely, 2^42295217 is an apocalyptic number.

It is an amenable number.

42295217 is a deficient number, since it is larger than the sum of its proper divisors (1).

42295217 is an equidigital number, since it uses as much as digits as its factorization.

42295217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 42295217 is about 6503.4773006446. The cubic root of 42295217 is about 348.4151939859.

The spelling of 42295217 in words is "forty-two million, two hundred ninety-five thousand, two hundred seventeen".