42084691 has 8 divisors (see below), whose sum is σ = 45957744. Its totient is φ = 38219520.

The previous prime is 42084689. The next prime is 42084697. The reversal of 42084691 is 19648024.

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 42084691 - 2¹ = 42084689 is a prime.

It is a super-2 number, since 2×42084691² = 3542242433130962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42084697) 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, 18471 + ... + 20623.

It is an arithmetic number, because the mean of its divisors is an integer number (5744718).

Almost surely, 2^42084691 is an apocalyptic number.

42084691 is a deficient number, since it is larger than the sum of its proper divisors (3873053).

42084691 is a wasteful number, since it uses less digits than its factorization.

42084691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3941.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 42084691 is about 6487.2714603291. The cubic root of 42084691 is about 347.8361490289.

The spelling of 42084691 in words is "forty-two million, eighty-four thousand, six hundred ninety-one".