1243422432 has 432 divisors, whose sum is σ = 4477086432. Its totient is φ = 325140480.

The previous prime is 1243422421. The next prime is 1243422461. The reversal of 1243422432 is 2342243421.

1243422432 is a `hidden beast` number, since 1 + 2 + 434 + 224 + 3 + 2 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1243422396 and 1243422405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 17033148 + ... + 17033220.

It is an arithmetic number, because the mean of its divisors is an integer number (10363626).

Almost surely, 2^1243422432 is an apocalyptic number.

1243422432 is a gapful number since it is divisible by the number (12) 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 1243422432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2238543216).

1243422432 is an abundant number, since it is smaller than the sum of its proper divisors (3233664000).

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

1243422432 is a wasteful number, since it uses less digits than its factorization.

1243422432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 173 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 1243422432 is about 35262.1955073702. The cubic root of 1243422432 is about 1075.3245623918.

Adding to 1243422432 its reverse (2342243421), we get a palindrome (3585665853).

The spelling of 1243422432 in words is "one billion, two hundred forty-three million, four hundred twenty-two thousand, four hundred thirty-two".