1145243144 has 8 divisors (see below), whose sum is σ = 2147330910. Its totient is φ = 572621568.

The previous prime is 1145243093. The next prime is 1145243173. The reversal of 1145243144 is 4413425411.

It can be written as a sum of positive squares in only one way, i.e., 633126244 + 512116900 = 25162^2 + 22630^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71577689 + ... + 71577704.

Almost surely, 2^1145243144 is an apocalyptic number.

It is an amenable number.

1145243144 is a deficient number, since it is larger than the sum of its proper divisors (1002087766).

1145243144 is a wasteful number, since it uses less digits than its factorization.

1145243144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143155399 (or 143155395 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

The square root of 1145243144 is about 33841.4412222648. The cubic root of 1145243144 is about 1046.2430036926.

Adding to 1145243144 its reverse (4413425411), we get a palindrome (5558668555).

The spelling of 1145243144 in words is "one billion, one hundred forty-five million, two hundred forty-three thousand, one hundred forty-four".