1142491328 has 112 divisors (see below), whose sum is σ = 2651906304. Its totient is φ = 483056640.

The previous prime is 1142491321. The next prime is 1142491333. The reversal of 1142491328 is 8231942411.

It is not an unprimeable number, because it can be changed into a prime (1142491321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 598151 + ... + 600057.

Almost surely, 2^1142491328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1142491328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1325953152).

1142491328 is an abundant number, since it is smaller than the sum of its proper divisors (1509414976).

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

1142491328 is a wasteful number, since it uses less digits than its factorization.

1142491328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990 (or 1980 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 1142491328 is about 33800.7592814126. The cubic root of 1142491328 is about 1045.4043528788.

The spelling of 1142491328 in words is "one billion, one hundred forty-two million, four hundred ninety-one thousand, three hundred twenty-eight".