42001105 has 16 divisors (see below), whose sum is σ = 54019584. Its totient is φ = 31268160.

The previous prime is 42001093. The next prime is 42001109. The reversal of 42001105 is 50110024.

It is not a de Polignac number, because 42001105 - 2⁵ = 42001073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42001109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 681 + ... + 9190.

It is an arithmetic number, because the mean of its divisors is an integer number (3376224).

Almost surely, 2^42001105 is an apocalyptic number.

It is an amenable number.

42001105 is a deficient number, since it is larger than the sum of its proper divisors (12018479).

42001105 is a wasteful number, since it uses less digits than its factorization.

42001105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9936.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 42001105 is about 6480.8259504480. The cubic root of 42001105 is about 347.6057128821.

Adding to 42001105 its reverse (50110024), we get a palindrome (92111129).

The spelling of 42001105 in words is "forty-two million, one thousand, one hundred five".