1142432320 has 56 divisors (see below), whose sum is σ = 2723311800. Its totient is φ = 456486912.

The previous prime is 1142432257. The next prime is 1142432321. The reversal of 1142432320 is 232342411.

It can be written as a sum of positive squares in 4 ways, for example, as 149426176 + 993006144 = 12224^2 + 31512^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1142432291 and 1142432300.

It is not an unprimeable number, because it can be changed into a prime (1142432321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545836 + ... + 547924.

Almost surely, 2^1142432320 is an apocalyptic number.

1142432320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142432320 is an abundant number, since it is smaller than the sum of its proper divisors (1580879480).

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

1142432320 is a wasteful number, since it uses less digits than its factorization.

1142432320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3815 (or 3805 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1142432320 is about 33799.8863903416. The cubic root of 1142432320 is about 1045.3863547022.

Adding to 1142432320 its reverse (232342411), we get a palindrome (1374774731).

The spelling of 1142432320 in words is "one billion, one hundred forty-two million, four hundred thirty-two thousand, three hundred twenty".