42195079 has 2 divisors, whose sum is σ = 42195080. Its totient is φ = 42195078.

The previous prime is 42195053. The next prime is 42195113. The reversal of 42195079 is 97059124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42195079 - 2²¹ = 40097927 is a prime.

It is equal to p_2558737 and since 42195079 and 2558737 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 (42190079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21097539 + 21097540.

It is an arithmetic number, because the mean of its divisors is an integer number (21097540).

Almost surely, 2^42195079 is an apocalyptic number.

42195079 is a deficient number, since it is larger than the sum of its proper divisors (1).

42195079 is an equidigital number, since it uses as much as digits as its factorization.

42195079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 42195079 is about 6495.7739338742. The cubic root of 42195079 is about 348.1400078515.

The spelling of 42195079 in words is "forty-two million, one hundred ninety-five thousand, seventy-nine".