1142310132 has 72 divisors (see below), whose sum is σ = 2935997064. Its totient is φ = 374409216.

The previous prime is 1142310109. The next prime is 1142310133. The reversal of 1142310132 is 2310132411.

It can be written as a sum of positive squares in 4 ways, for example, as 591656976 + 550653156 = 24324^2 + 23466^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142310133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1558038 + ... + 1558770.

It is an arithmetic number, because the mean of its divisors is an integer number (40777737).

Almost surely, 2^1142310132 is an apocalyptic number.

1142310132 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 1142310132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1467998532).

1142310132 is an abundant number, since it is smaller than the sum of its proper divisors (1793686932).

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

1142310132 is a wasteful number, since it uses less digits than its factorization.

1142310132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409 (or 1404 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1142310132 is about 33798.0788211401. The cubic root of 1142310132 is about 1045.3490838665.

Adding to 1142310132 its reverse (2310132411), we get a palindrome (3452442543).

The spelling of 1142310132 in words is "one billion, one hundred forty-two million, three hundred ten thousand, one hundred thirty-two".