402424404223 has 4 divisors (see below), whose sum is σ = 402446728368. Its totient is φ = 402402080080.

The previous prime is 402424404149. The next prime is 402424404259. The reversal of 402424404223 is 322404424204.

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 402424404223 - 2¹⁷ = 402424273151 is a prime.

It is a super-2 number, since 2×402424404223² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402424404323) 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, 11135011 + ... + 11171092.

It is an arithmetic number, because the mean of its divisors is an integer number (100611682092).

Almost surely, 2^402424404223 is an apocalyptic number.

402424404223 is a deficient number, since it is larger than the sum of its proper divisors (22324145).

402424404223 is a wasteful number, since it uses less digits than its factorization.

402424404223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22324144.

The product of its (nonzero) digits is 49152, while the sum is 31.

Adding to 402424404223 its reverse (322404424204), we get a palindrome (724828828427).

The spelling of 402424404223 in words is "four hundred two billion, four hundred twenty-four million, four hundred four thousand, two hundred twenty-three".