42353681 has 8 divisors (see below), whose sum is σ = 45606240. Its totient is φ = 39185728.

The previous prime is 42353669. The next prime is 42353683. The reversal of 42353681 is 18635324.

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 42353681 - 2⁶ = 42353617 is a prime.

It is a super-2 number, since 2×42353681² = 3587668588499522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42353683) 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, 20111 + ... + 22116.

It is an arithmetic number, because the mean of its divisors is an integer number (5700780).

Almost surely, 2^42353681 is an apocalyptic number.

It is an amenable number.

42353681 is a deficient number, since it is larger than the sum of its proper divisors (3252559).

42353681 is a wasteful number, since it uses less digits than its factorization.

42353681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42303.

The product of its digits is 17280, while the sum is 32.

The square root of 42353681 is about 6507.9705746108. The cubic root of 42353681 is about 348.5756563183.

It can be divided in two parts, 42353 and 681, that added together give a palindrome (43034).

The spelling of 42353681 in words is "forty-two million, three hundred fifty-three thousand, six hundred eighty-one".