42801605 has 32 divisors (see below), whose sum is σ = 64696320. Its totient is φ = 26406720.

The previous prime is 42801601. The next prime is 42801611. The reversal of 42801605 is 50610824.

It is not a de Polignac number, because 42801605 - 2² = 42801601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42801601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40676 + ... + 41714.

It is an arithmetic number, because the mean of its divisors is an integer number (2021760).

Almost surely, 2^42801605 is an apocalyptic number.

It is an amenable number.

42801605 is a deficient number, since it is larger than the sum of its proper divisors (21894715).

42801605 is a wasteful number, since it uses less digits than its factorization.

42801605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 42801605 is about 6542.2935580727. The cubic root of 42801605 is about 349.8001716464.

It can be divided in two parts, 4280 and 1605, that added together give a palindrome (5885).

The spelling of 42801605 in words is "forty-two million, eight hundred one thousand, six hundred five".