42810681 has 8 divisors (see below), whose sum is σ = 57377440. Its totient is φ = 28392192.

The previous prime is 42810679. The next prime is 42810689. The reversal of 42810681 is 18601824.

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

It is not a de Polignac number, because 42810681 - 2¹ = 42810679 is a prime.

It is a super-2 number, since 2×42810681² = 3665508815367522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42810689) 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, 36391 + ... + 37548.

It is an arithmetic number, because the mean of its divisors is an integer number (7172180).

Almost surely, 2^42810681 is an apocalyptic number.

It is an amenable number.

42810681 is a deficient number, since it is larger than the sum of its proper divisors (14566759).

42810681 is a wasteful number, since it uses less digits than its factorization.

42810681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74135.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 42810681 is about 6542.9871618398. The cubic root of 42810681 is about 349.8248947222.

The spelling of 42810681 in words is "forty-two million, eight hundred ten thousand, six hundred eighty-one".