42199169 has 2 divisors, whose sum is σ = 42199170. Its totient is φ = 42199168.

The previous prime is 42199159. The next prime is 42199177. The reversal of 42199169 is 96199124.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25877569 + 16321600 = 5087^2 + 4040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42199169 is a prime.

It is a super-2 number, since 2×42199169² = 3561539728581122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42199159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21099584 + 21099585.

It is an arithmetic number, because the mean of its divisors is an integer number (21099585).

Almost surely, 2^42199169 is an apocalyptic number.

It is an amenable number.

42199169 is a deficient number, since it is larger than the sum of its proper divisors (1).

42199169 is an equidigital number, since it uses as much as digits as its factorization.

42199169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 41.

The square root of 42199169 is about 6496.0887463150. The cubic root of 42199169 is about 348.1512559770.

The spelling of 42199169 in words is "forty-two million, one hundred ninety-nine thousand, one hundred sixty-nine".