403442023 has 4 divisors (see below), whose sum is σ = 403486200. Its totient is φ = 403397848.

The previous prime is 403442021. The next prime is 403442033. The reversal of 403442023 is 320244304.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 403442023 - 2¹ = 403442021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 403441985 and 403442003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403442021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2740 + ... + 28537.

It is an arithmetic number, because the mean of its divisors is an integer number (100871550).

Almost surely, 2^403442023 is an apocalyptic number.

403442023 is a deficient number, since it is larger than the sum of its proper divisors (44177).

403442023 is a wasteful number, since it uses less digits than its factorization.

403442023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44176.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 403442023 is about 20085.8662496792. The cubic root of 403442023 is about 738.9136867007.

Adding to 403442023 its reverse (320244304), we get a palindrome (723686327).

The spelling of 403442023 in words is "four hundred three million, four hundred forty-two thousand, twenty-three".