1142311340 has 24 divisors (see below), whose sum is σ = 2454642960. Its totient is φ = 446298048.

The previous prime is 1142311333. The next prime is 1142311367. The reversal of 1142311340 is 431132411.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663275 + ... + 664994.

It is an arithmetic number, because the mean of its divisors is an integer number (102276790).

Almost surely, 2^1142311340 is an apocalyptic number.

1142311340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142311340 is an abundant number, since it is smaller than the sum of its proper divisors (1312331620).

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

1142311340 is a wasteful number, since it uses less digits than its factorization.

1142311340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328321 (or 1328319 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1142311340 is about 33798.0966919736. The cubic root of 1142311340 is about 1045.3494523540.

Adding to 1142311340 its reverse (431132411), we get a palindrome (1573443751).

The spelling of 1142311340 in words is "one billion, one hundred forty-two million, three hundred eleven thousand, three hundred forty".