42044111 has 4 divisors (see below), whose sum is σ = 44517312. Its totient is φ = 39570912.

The previous prime is 42044089. The next prime is 42044117. The reversal of 42044111 is 11144024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42044111 - 2⁶ = 42044047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 2473183 = 42044111 / (4 + 2 + 0 + 4 + 4 + 1 + 1 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42044111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42044117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1236575 + ... + 1236608.

It is an arithmetic number, because the mean of its divisors is an integer number (11129328).

Almost surely, 2^42044111 is an apocalyptic number.

42044111 is a deficient number, since it is larger than the sum of its proper divisors (2473201).

42044111 is a wasteful number, since it uses less digits than its factorization.

42044111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2473200.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 42044111 is about 6484.1430428392. The cubic root of 42044111 is about 347.7243131897.

Adding to 42044111 its reverse (11144024), we get a palindrome (53188135).

The spelling of 42044111 in words is "forty-two million, forty-four thousand, one hundred eleven".