423221054340 has 192 divisors, whose sum is σ = 1435180239360. Its totient is φ = 91122339840.

The previous prime is 423221054339. The next prime is 423221054359. The reversal of 423221054340 is 43450122324.

It is a super-2 number, since 2×423221054340² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 423221054298 and 423221054307.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 75634 + ... + 923126.

It is an arithmetic number, because the mean of its divisors is an integer number (7474897080).

Almost surely, 2^423221054340 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 423221054340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (717590119680).

423221054340 is an abundant number, since it is smaller than the sum of its proper divisors (1011959185020).

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

423221054340 is a wasteful number, since it uses less digits than its factorization.

423221054340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847582 (or 847580 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 423221054340 its reverse (43450122324), we get a palindrome (466671176664).

The spelling of 423221054340 in words is "four hundred twenty-three billion, two hundred twenty-one million, fifty-four thousand, three hundred forty".