423404233340 has 72 divisors (see below), whose sum is σ = 980453155920. Its totient is φ = 153472999680.

The previous prime is 423404233321. The next prime is 423404233451. The reversal of 423404233340 is 43332404324.

It is a super-2 number, since 2×423404233340² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 423404233297 and 423404233306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 477971 + ... + 1036949.

Almost surely, 2^423404233340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423404233340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (490226577960).

423404233340 is an abundant number, since it is smaller than the sum of its proper divisors (557048922580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423404233340 is a wasteful number, since it uses less digits than its factorization.

423404233340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559323 (or 559310 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 32.

Adding to 423404233340 its reverse (43332404324), we get a palindrome (466736637664).

The spelling of 423404233340 in words is "four hundred twenty-three billion, four hundred four million, two hundred thirty-three thousand, three hundred forty".