1142535544 has 8 divisors (see below), whose sum is σ = 2142254160. Its totient is φ = 571267768.

The previous prime is 1142535517. The next prime is 1142535547. The reversal of 1142535544 is 4455352411.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142535547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71408464 + ... + 71408479.

It is an arithmetic number, because the mean of its divisors is an integer number (267781770).

Almost surely, 2^1142535544 is an apocalyptic number.

It is an amenable number.

1142535544 is a deficient number, since it is larger than the sum of its proper divisors (999718616).

1142535544 is a wasteful number, since it uses less digits than its factorization.

1142535544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142816949 (or 142816945 counting only the distinct ones).

The product of its digits is 48000, while the sum is 34.

The square root of 1142535544 is about 33801.4133432317. The cubic root of 1142535544 is about 1045.4178389046.

Adding to 1142535544 its reverse (4455352411), we get a palindrome (5597887955).

The spelling of 1142535544 in words is "one billion, one hundred forty-two million, five hundred thirty-five thousand, five hundred forty-four".