40442023 has 8 divisors (see below), whose sum is σ = 40974336. Its totient is φ = 39912600.

The previous prime is 40442009. The next prime is 40442057. The reversal of 40442023 is 32024404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40442023 - 2⁵ = 40441991 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 (40442063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43938 + ... + 44848.

It is an arithmetic number, because the mean of its divisors is an integer number (5121792).

Almost surely, 2^40442023 is an apocalyptic number.

40442023 is a deficient number, since it is larger than the sum of its proper divisors (532313).

40442023 is a wasteful number, since it uses less digits than its factorization.

40442023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445.

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

The square root of 40442023 is about 6359.4042960013. The cubic root of 40442023 is about 343.2503251322.

Adding to 40442023 its reverse (32024404), we get a palindrome (72466427).

The spelling of 40442023 in words is "forty million, four hundred forty-two thousand, twenty-three".