1143542241 has 6 divisors (see below), whose sum is σ = 1651783250. Its totient is φ = 762361488.

The previous prime is 1143542209. The next prime is 1143542243. The reversal of 1143542241 is 1422453411.

1143542241 is a `hidden beast` number, since 1 + 1 + 435 + 4 + 224 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 646430625 + 497111616 = 25425^2 + 22296^2 .

It is not a de Polignac number, because 1143542241 - 2⁵ = 1143542209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1143542243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63530116 + ... + 63530133.

Almost surely, 2^1143542241 is an apocalyptic number.

It is an amenable number.

1143542241 is a deficient number, since it is larger than the sum of its proper divisors (508241009).

1143542241 is a wasteful number, since it uses less digits than its factorization.

1143542241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127060255 (or 127060252 counting only the distinct ones).

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

The square root of 1143542241 is about 33816.3014092316. The cubic root of 1143542241 is about 1045.7247907133.

Adding to 1143542241 its reverse (1422453411), we get a palindrome (2565995652).

The spelling of 1143542241 in words is "one billion, one hundred forty-three million, five hundred forty-two thousand, two hundred forty-one".