42342197 has 2 divisors, whose sum is σ = 42342198. Its totient is φ = 42342196.

The previous prime is 42342169. The next prime is 42342221. The reversal of 42342197 is 79124324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42328036 + 14161 = 6506^2 + 119^2 .

It is a cyclic number.

It is not a de Polignac number, because 42342197 - 2⁶ = 42342133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42345197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21171098 + 21171099.

It is an arithmetic number, because the mean of its divisors is an integer number (21171099).

Almost surely, 2^42342197 is an apocalyptic number.

It is an amenable number.

42342197 is a deficient number, since it is larger than the sum of its proper divisors (1).

42342197 is an equidigital number, since it uses as much as digits as its factorization.

42342197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

The square root of 42342197 is about 6507.0882120961. The cubic root of 42342197 is about 348.5441485910.

The spelling of 42342197 in words is "forty-two million, three hundred forty-two thousand, one hundred ninety-seven".