423243301421340 has 384 divisors, whose sum is σ = 1354427010800640. Its totient is φ = 109659142656000.

The previous prime is 423243301421329. The next prime is 423243301421377. The reversal of 423243301421340 is 43124103342324.

423243301421340 is a `hidden beast` number, since 4 + 2 + 3 + 2 + 4 + 3 + 301 + 4 + 2 + 1 + 340 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 423243301421295 and 423243301421304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 11284362867 + ... + 11284400373.

It is an arithmetic number, because the mean of its divisors is an integer number (3527153673960).

Almost surely, 2^{423243301421340} 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 423243301421340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (677213505400320).

423243301421340 is an abundant number, since it is smaller than the sum of its proper divisors (931183709379300).

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

423243301421340 is a wasteful number, since it uses less digits than its factorization.

423243301421340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39650 (or 39642 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 36.

Adding to 423243301421340 its reverse (43124103342324), we get a palindrome (466367404763664).

The spelling of 423243301421340 in words is "four hundred twenty-three trillion, two hundred forty-three billion, three hundred one million, four hundred twenty-one thousand, three hundred forty".