1142442224 has 80 divisors (see below), whose sum is σ = 2777084160. Its totient is φ = 442298880.

The previous prime is 1142442173. The next prime is 1142442263. The reversal of 1142442224 is 4222442411.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1142442193 and 1142442202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197972 + ... + 203660.

It is an arithmetic number, because the mean of its divisors is an integer number (34713552).

Almost surely, 2^1142442224 is an apocalyptic number.

1142442224 is a gapful number since it is divisible by the number (14) 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 1142442224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1388542080).

1142442224 is an abundant number, since it is smaller than the sum of its proper divisors (1634641936).

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

1142442224 is a wasteful number, since it uses less digits than its factorization.

1142442224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5878 (or 5872 counting only the distinct ones).

The product of its digits is 4096, while the sum is 26.

The square root of 1142442224 is about 33800.0328993923. The cubic root of 1142442224 is about 1045.3893755891.

Adding to 1142442224 its reverse (4222442411), we get a palindrome (5364884635).

The spelling of 1142442224 in words is "one billion, one hundred forty-two million, four hundred forty-two thousand, two hundred twenty-four".