42044023 has 16 divisors (see below), whose sum is σ = 50605056. Its totient is φ = 34151040.

The previous prime is 42043993. The next prime is 42044047. The reversal of 42044023 is 32044024.

It is a de Polignac number, because none of the positive numbers 2^k-42044023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42044053) 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, 17038 + ... + 19348.

It is an arithmetic number, because the mean of its divisors is an integer number (3162816).

Almost surely, 2^42044023 is an apocalyptic number.

42044023 is a deficient number, since it is larger than the sum of its proper divisors (8561033).

42044023 is a wasteful number, since it uses less digits than its factorization.

42044023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2454.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 42044023 is about 6484.1362570507. The cubic root of 42044023 is about 347.7240705893.

Adding to 42044023 its reverse (32044024), we get a palindrome (74088047).

Subtracting from 42044023 its reverse (32044024), we obtain a palindrome (9999999).

The spelling of 42044023 in words is "forty-two million, forty-four thousand, twenty-three".