423340400000 has 288 divisors, whose sum is σ = 1226312136000. Its totient is φ = 145138560000.

The previous prime is 423340399987. The next prime is 423340400057. The reversal of 423340400000 is 4043324.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 19589201 + ... + 19610799.

It is an arithmetic number, because the mean of its divisors is an integer number (4258028250).

Almost surely, 2^423340400000 is an apocalyptic number.

423340400000 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 423340400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (613156068000).

423340400000 is an abundant number, since it is smaller than the sum of its proper divisors (802971736000).

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

423340400000 is an frugal number, since it uses more digits than its factorization.

423340400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21652 (or 21613 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 423340400000 its reverse (4043324), we get a palindrome (423344443324).

The spelling of 423340400000 in words is "four hundred twenty-three billion, three hundred forty million, four hundred thousand".