423404220133 has 4 divisors (see below), whose sum is σ = 423410581228. Its totient is φ = 423397859040.

The previous prime is 423404220097. The next prime is 423404220139. The reversal of 423404220133 is 331022404324.

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

It can be written as a sum of positive squares in 2 ways, for example, as 165317867649 + 258086352484 = 406593^2 + 508022^2 .

It is a cyclic number.

It is not a de Polignac number, because 423404220133 - 2⁹ = 423404219621 is a prime.

It is a super-2 number, since 2×423404220133² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423404220139) 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, 3079638 + ... + 3214183.

It is an arithmetic number, because the mean of its divisors is an integer number (105852645307).

Almost surely, 2^423404220133 is an apocalyptic number.

It is an amenable number.

423404220133 is a deficient number, since it is larger than the sum of its proper divisors (6361095).

423404220133 is an equidigital number, since it uses as much as digits as its factorization.

423404220133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6361094.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 423404220133 its reverse (331022404324), we get a palindrome (754426624457).

The spelling of 423404220133 in words is "four hundred twenty-three billion, four hundred four million, two hundred twenty thousand, one hundred thirty-three".