42591071 has 8 divisors (see below), whose sum is σ = 43642560. Its totient is φ = 41545728.

The previous prime is 42591041. The next prime is 42591077. The reversal of 42591071 is 17019524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42591071 - 2¹⁰ = 42590047 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 (42591077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14495 + ... + 17183.

It is an arithmetic number, because the mean of its divisors is an integer number (5455320).

Almost surely, 2^42591071 is an apocalyptic number.

42591071 is a deficient number, since it is larger than the sum of its proper divisors (1051489).

42591071 is a wasteful number, since it uses less digits than its factorization.

42591071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3073.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 42591071 is about 6526.1834942024. The cubic root of 42591071 is about 349.2256923381.

The spelling of 42591071 in words is "forty-two million, five hundred ninety-one thousand, seventy-one".