42023444 has 12 divisors (see below), whose sum is σ = 73668000. Its totient is φ = 20975448.

The previous prime is 42023441. The next prime is 42023447. The reversal of 42023444 is 44432024.

It is an interprime number because it is at equal distance from previous prime (42023441) and next prime (42023447).

It is a super-2 number, since 2×42023444² = 3531939691242272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42023441) 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, 6374 + ... + 11165.

It is an arithmetic number, because the mean of its divisors is an integer number (6139000).

Almost surely, 2^42023444 is an apocalyptic number.

It is an amenable number.

42023444 is a deficient number, since it is larger than the sum of its proper divisors (31644556).

42023444 is a wasteful number, since it uses less digits than its factorization.

42023444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18142 (or 18140 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 42023444 is about 6482.5491899406. The cubic root of 42023444 is about 347.6673286241.

Adding to 42023444 its reverse (44432024), we get a palindrome (86455468).

The spelling of 42023444 in words is "forty-two million, twenty-three thousand, four hundred forty-four".