42432197 has 2 divisors, whose sum is σ = 42432198. Its totient is φ = 42432196.

The previous prime is 42432167. The next prime is 42432209. The reversal of 42432197 is 79123424.

It is a Cunningham number, because it is equal to 6514²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42432196 + 1 = 6514^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 42432197 - 2¹⁸ = 42170053 is a prime.

It is a Chen prime.

It is equal to p_2572295 and since 42432197 and 2572295 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42432127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21216098 + 21216099.

It is an arithmetic number, because the mean of its divisors is an integer number (21216099).

Almost surely, 2^42432197 is an apocalyptic number.

It is an amenable number.

42432197 is a deficient number, since it is larger than the sum of its proper divisors (1).

42432197 is an equidigital number, since it uses as much as digits as its factorization.

42432197 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 42432197 is about 6514.0000767578. Note that the first 4 decimals coincide. The cubic root of 42432197 is about 348.7909219162.

The spelling of 42432197 in words is "forty-two million, four hundred thirty-two thousand, one hundred ninety-seven".