1142111344 has 40 divisors (see below), whose sum is σ = 2416064112. Its totient is φ = 518699520.

The previous prime is 1142111339. The next prime is 1142111351. The reversal of 1142111344 is 4431112411.

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

It is a congruent number.

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, 296052 + ... + 299884.

Almost surely, 2^1142111344 is an apocalyptic number.

It is an amenable number.

1142111344 is an abundant number, since it is smaller than the sum of its proper divisors (1273952768).

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

1142111344 is a wasteful number, since it uses less digits than its factorization.

1142111344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5545 (or 5539 counting only the distinct ones).

The product of its digits is 384, while the sum is 22.

The square root of 1142111344 is about 33795.1378751441. The cubic root of 1142111344 is about 1045.2884421594.

Adding to 1142111344 its reverse (4431112411), we get a palindrome (5573223755).

The spelling of 1142111344 in words is "one billion, one hundred forty-two million, one hundred eleven thousand, three hundred forty-four".