403442001023 has 4 divisors (see below), whose sum is σ = 403445433768. Its totient is φ = 403438568280.

The previous prime is 403442000989. The next prime is 403442001029. The reversal of 403442001023 is 320100244304.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 403442001023 - 2¹⁸ = 403441738879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 403442001023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403442001029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1533593 + ... + 1777298.

It is an arithmetic number, because the mean of its divisors is an integer number (100861358442).

Almost surely, 2^403442001023 is an apocalyptic number.

403442001023 is a deficient number, since it is larger than the sum of its proper divisors (3432745).

403442001023 is a wasteful number, since it uses less digits than its factorization.

403442001023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3432744.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 403442001023 its reverse (320100244304), we get a palindrome (723542245327).

The spelling of 403442001023 in words is "four hundred three billion, four hundred forty-two million, one thousand, twenty-three".