1142045568 has 112 divisors (see below), whose sum is σ = 3411471600. Its totient is φ = 380650752.

The previous prime is 1142045551. The next prime is 1142045573. The reversal of 1142045568 is 8655402411.

It is a happy number.

1142045568 is a `hidden beast` number, since 1 + 142 + 0 + 455 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 87193 + ... + 99431.

Almost surely, 2^1142045568 is an apocalyptic number.

1142045568 is a gapful number since it is divisible by the number (18) 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 1142045568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1705735800).

1142045568 is an abundant number, since it is smaller than the sum of its proper divisors (2269426032).

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

1142045568 is an frugal number, since it uses more digits than its factorization.

1142045568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12271 (or 12244 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 1142045568 is about 33794.1647033922. The cubic root of 1142045568 is about 1045.2683751689.

Adding to 1142045568 its reverse (8655402411), we get a palindrome (9797447979).

The spelling of 1142045568 in words is "one billion, one hundred forty-two million, forty-five thousand, five hundred sixty-eight".