423340432320 has 224 divisors, whose sum is σ = 1453565352960. Its totient is φ = 103770132480.

The previous prime is 423340432297. The next prime is 423340432321. The reversal of 423340432320 is 23234043324.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423340432321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2911755 + ... + 3053685.

It is an arithmetic number, because the mean of its divisors is an integer number (6489131040).

Almost surely, 2^423340432320 is an apocalyptic number.

423340432320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423340432320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (726782676480).

423340432320 is an abundant number, since it is smaller than the sum of its proper divisors (1030224920640).

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

423340432320 is a wasteful number, since it uses less digits than its factorization.

423340432320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142203 (or 142193 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 30.

Adding to 423340432320 its reverse (23234043324), we get a palindrome (446574475644).

The spelling of 423340432320 in words is "four hundred twenty-three billion, three hundred forty million, four hundred thirty-two thousand, three hundred twenty".