42491075 has 48 divisors (see below), whose sum is σ = 62272800. Its totient is φ = 28416000.

The previous prime is 42491027. The next prime is 42491083. The reversal of 42491075 is 57019424.

It is a happy number.

It is not a de Polignac number, because 42491075 - 2¹² = 42486979 is a prime.

It is an unprimeable number.

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 in 47 ways as a sum of consecutive naturals, for example, 285101 + ... + 285249.

It is an arithmetic number, because the mean of its divisors is an integer number (1297350).

Almost surely, 2^42491075 is an apocalyptic number.

42491075 is a deficient number, since it is larger than the sum of its proper divisors (19781725).

42491075 is a wasteful number, since it uses less digits than its factorization.

42491075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 42491075 is about 6518.5178530092. The cubic root of 42491075 is about 348.9521722731.

The spelling of 42491075 in words is "forty-two million, four hundred ninety-one thousand, seventy-five".