42691033 has 24 divisors (see below), whose sum is σ = 54475200. Its totient is φ = 32500800.

The previous prime is 42691031. The next prime is 42691039. The reversal of 42691033 is 33019624.

It is not a de Polignac number, because 42691033 - 2¹ = 42691031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42690992 and 42691010.

It is not an unprimeable number, because it can be changed into a prime (42691031) 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, 286443 + ... + 286591.

It is an arithmetic number, because the mean of its divisors is an integer number (2269800).

Almost surely, 2^42691033 is an apocalyptic number.

It is an amenable number.

42691033 is a deficient number, since it is larger than the sum of its proper divisors (11784167).

42691033 is a wasteful number, since it uses less digits than its factorization.

42691033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 42691033 is about 6533.8375400679. The cubic root of 42691033 is about 349.4986918384.

The spelling of 42691033 in words is "forty-two million, six hundred ninety-one thousand, thirty-three".