1142320432 has 40 divisors (see below), whose sum is σ = 2541533760. Its totient is φ = 491906880.

The previous prime is 1142320427. The next prime is 1142320433. The reversal of 1142320432 is 2340232411.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1142320433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167458 + ... + 174145.

It is an arithmetic number, because the mean of its divisors is an integer number (63538344).

Almost surely, 2^1142320432 is an apocalyptic number.

It is an amenable number.

1142320432 is an abundant number, since it is smaller than the sum of its proper divisors (1399213328).

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

1142320432 is a wasteful number, since it uses less digits than its factorization.

1142320432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341641 (or 341635 counting only the distinct ones).

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

The square root of 1142320432 is about 33798.2311963215. The cubic root of 1142320432 is about 1045.3522257637.

Adding to 1142320432 its reverse (2340232411), we get a palindrome (3482552843).

The spelling of 1142320432 in words is "one billion, one hundred forty-two million, three hundred twenty thousand, four hundred thirty-two".