1142211444 has 144 divisors (see below), whose sum is σ = 3038784000. Its totient is φ = 333495360.

The previous prime is 1142211443. The next prime is 1142211463. The reversal of 1142211444 is 4441122411.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142211443) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5739657 + ... + 5739855.

Almost surely, 2^1142211444 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 1142211444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1519392000).

1142211444 is an abundant number, since it is smaller than the sum of its proper divisors (1896572556).

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

1142211444 is a wasteful number, since it uses less digits than its factorization.

1142211444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 341 counting only the distinct ones).

The product of its digits is 1024, while the sum is 24.

The square root of 1142211444 is about 33796.6188249653. The cubic root of 1142211444 is about 1045.3189792628.

Adding to 1142211444 its reverse (4441122411), we get a palindrome (5583333855).

The spelling of 1142211444 in words is "one billion, one hundred forty-two million, two hundred eleven thousand, four hundred forty-four".