1145243142 has 12 divisors (see below), whose sum is σ = 2481360180. Its totient is φ = 381747708.

The previous prime is 1145243093. The next prime is 1145243173. The reversal of 1145243142 is 2413425411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31812292 + ... + 31812327.

It is an arithmetic number, because the mean of its divisors is an integer number (206780015).

Almost surely, 2^1145243142 is an apocalyptic number.

1145243142 is an abundant number, since it is smaller than the sum of its proper divisors (1336117038).

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

1145243142 is a wasteful number, since it uses less digits than its factorization.

1145243142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63624627 (or 63624624 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 1145243142 is about 33841.4411927152. The cubic root of 1145243142 is about 1046.2430030835.

Adding to 1145243142 its reverse (2413425411), we get a palindrome (3558668553).

The spelling of 1145243142 in words is "one billion, one hundred forty-five million, two hundred forty-three thousand, one hundred forty-two".