42893181 has 12 divisors (see below), whose sum is σ = 63955840. Its totient is φ = 27672840.

The previous prime is 42893171. The next prime is 42893189. The reversal of 42893181 is 18139824.

It is not a de Polignac number, because 42893181 - 2¹¹ = 42891133 is a prime.

It is a super-2 number, since 2×42893181² = 3679649952597522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42893189) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76591 + ... + 77148.

Almost surely, 2^42893181 is an apocalyptic number.

It is an amenable number.

42893181 is a deficient number, since it is larger than the sum of its proper divisors (21062659).

42893181 is a wasteful number, since it uses less digits than its factorization.

42893181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153776 (or 153773 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 42893181 is about 6549.2885873200. The cubic root of 42893181 is about 350.0494651177.

The spelling of 42893181 in words is "forty-two million, eight hundred ninety-three thousand, one hundred eighty-one".