42190177 has 2 divisors, whose sum is σ = 42190178. Its totient is φ = 42190176.

The previous prime is 42190153. The next prime is 42190193. The reversal of 42190177 is 77109124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21678336 + 20511841 = 4656^2 + 4529^2 .

It is a cyclic number.

It is not a de Polignac number, because 42190177 - 2¹⁹ = 41665889 is a prime.

It is a super-2 number, since 2×42190177² = 3560022070582658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42199177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21095088 + 21095089.

It is an arithmetic number, because the mean of its divisors is an integer number (21095089).

Almost surely, 2^42190177 is an apocalyptic number.

It is an amenable number.

42190177 is a deficient number, since it is larger than the sum of its proper divisors (1).

42190177 is an equidigital number, since it uses as much as digits as its factorization.

42190177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 42190177 is about 6495.3966006704. The cubic root of 42190177 is about 348.1265256442.

The spelling of 42190177 in words is "forty-two million, one hundred ninety thousand, one hundred seventy-seven".