42491056 has 10 divisors (see below), whose sum is σ = 82326452. Its totient is φ = 21245520.

The previous prime is 42491027. The next prime is 42491083. The reversal of 42491056 is 65019424.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1327830 + ... + 1327861.

Almost surely, 2^42491056 is an apocalyptic number.

It is an amenable number.

42491056 is a deficient number, since it is larger than the sum of its proper divisors (39835396).

42491056 is a wasteful number, since it uses less digits than its factorization.

42491056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2655699 (or 2655693 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 42491056 is about 6518.5163956225. The cubic root of 42491056 is about 348.9521202614.

The spelling of 42491056 in words is "forty-two million, four hundred ninety-one thousand, fifty-six".