1143546426 has 96 divisors (see below), whose sum is σ = 2855736000. Its totient is φ = 327075840.

The previous prime is 1143546421. The next prime is 1143546427. The reversal of 1143546426 is 6246453411.

1143546426 is a `hidden beast` number, since 1 + 1 + 4 + 3 + 5 + 4 + 642 + 6 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1143546421) 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 47 ways as a sum of consecutive naturals, for example, 1688800 + ... + 1689476.

It is an arithmetic number, because the mean of its divisors is an integer number (29747250).

Almost surely, 2^1143546426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143546426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1427868000).

1143546426 is an abundant number, since it is smaller than the sum of its proper divisors (1712189574).

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

1143546426 is a wasteful number, since it uses less digits than its factorization.

1143546426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164 (or 1161 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 1143546426 is about 33816.3632876157. The cubic root of 1143546426 is about 1045.7260663849.

Adding to 1143546426 its reverse (6246453411), we get a palindrome (7389999837).

The spelling of 1143546426 in words is "one billion, one hundred forty-three million, five hundred forty-six thousand, four hundred twenty-six".