402144433023 has 8 divisors (see below), whose sum is σ = 536195535408. Its totient is φ = 268094809664.

The previous prime is 402144432997. The next prime is 402144433049. The reversal of 402144433023 is 320334441204.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (402144432997) and next prime (402144433049).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402144433023 is a prime.

It is a super-2 number, since 2×402144433023² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402144483023) 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 7 ways as a sum of consecutive naturals, for example, 743515 + ... + 1164947.

It is an arithmetic number, because the mean of its divisors is an integer number (67024441926).

Almost surely, 2^402144433023 is an apocalyptic number.

402144433023 is a deficient number, since it is larger than the sum of its proper divisors (134051102385).

402144433023 is a wasteful number, since it uses less digits than its factorization.

402144433023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739513.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 402144433023 its reverse (320334441204), we get a palindrome (722478874227).

The spelling of 402144433023 in words is "four hundred two billion, one hundred forty-four million, four hundred thirty-three thousand, twenty-three".