42044823 has 6 divisors (see below), whose sum is σ = 60731424. Its totient is φ = 28029876.

The previous prime is 42044813. The next prime is 42044833. The reversal of 42044823 is 32844024.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42044813) and next prime (42044833).

It is not a de Polignac number, because 42044823 - 2²⁰ = 40996247 is a prime.

It is a super-2 number, since 2×42044823² = 3535534282202658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42044813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2335815 + ... + 2335832.

It is an arithmetic number, because the mean of its divisors is an integer number (10121904).

Almost surely, 2^42044823 is an apocalyptic number.

42044823 is a deficient number, since it is larger than the sum of its proper divisors (18686601).

42044823 is a wasteful number, since it uses less digits than its factorization.

42044823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4671653 (or 4671650 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 42044823 is about 6484.1979457756. The cubic root of 42044823 is about 347.7262760355.

Adding to 42044823 its reverse (32844024), we get a palindrome (74888847).

The spelling of 42044823 in words is "forty-two million, forty-four thousand, eight hundred twenty-three".