423222510400 has 84 divisors (see below), whose sum is σ = 1044185297452. Its totient is φ = 168834908160.

The previous prime is 423222510391. The next prime is 423222510407. The reversal of 423222510400 is 4015222324.

It can be written as a sum of positive squares in 6 ways, for example, as 3256300096 + 419966210304 = 57064^2 + 648048^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423222510407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242224 + ... + 951376.

Almost surely, 2^423222510400 is an apocalyptic number.

423222510400 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 423222510400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (522092648726).

423222510400 is an abundant number, since it is smaller than the sum of its proper divisors (620962787052).

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

423222510400 is a wasteful number, since it uses less digits than its factorization.

423222510400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709548 (or 709533 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 423222510400 its reverse (4015222324), we get a palindrome (427237732724).

The spelling of 423222510400 in words is "four hundred twenty-three billion, two hundred twenty-two million, five hundred ten thousand, four hundred".