42662191 has 24 divisors (see below), whose sum is σ = 51465456. Its totient is φ = 35043840.

The previous prime is 42662167. The next prime is 42662227. The reversal of 42662191 is 19126624.

It is not a de Polignac number, because 42662191 - 2¹¹ = 42660143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42662101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98311 + ... + 98743.

It is an arithmetic number, because the mean of its divisors is an integer number (2144394).

Almost surely, 2^42662191 is an apocalyptic number.

42662191 is a deficient number, since it is larger than the sum of its proper divisors (8803265).

42662191 is a wasteful number, since it uses less digits than its factorization.

42662191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523 (or 510 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 42662191 is about 6531.6300415746. The cubic root of 42662191 is about 349.4199671705.

The spelling of 42662191 in words is "forty-two million, six hundred sixty-two thousand, one hundred ninety-one".