42597681 has 8 divisors (see below), whose sum is σ = 64910784. Its totient is φ = 24341520.

The previous prime is 42597673. The next prime is 42597691. The reversal of 42597681 is 18679524.

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

It is not a de Polignac number, because 42597681 - 2³ = 42597673 is a prime.

It is a super-2 number, since 2×42597681² = 3629124853155522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42597641) 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, 1014210 + ... + 1014251.

It is an arithmetic number, because the mean of its divisors is an integer number (8113848).

Almost surely, 2^42597681 is an apocalyptic number.

It is an amenable number.

42597681 is a deficient number, since it is larger than the sum of its proper divisors (22313103).

42597681 is a wasteful number, since it uses less digits than its factorization.

42597681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028471.

The product of its digits is 120960, while the sum is 42.

The square root of 42597681 is about 6526.6898961112. The cubic root of 42597681 is about 349.2437576459.

The spelling of 42597681 in words is "forty-two million, five hundred ninety-seven thousand, six hundred eighty-one".