1143123426 has 12 divisors (see below), whose sum is σ = 2476767462. Its totient is φ = 381041136.

The previous prime is 1143123409. The next prime is 1143123431. The reversal of 1143123426 is 6243213411.

It is a happy number.

1143123426 is a `hidden beast` number, since 1 + 1 + 4 + 312 + 342 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 985646025 + 157477401 = 31395^2 + 12549^2 .

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 1143123426.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31753411 + ... + 31753446.

Almost surely, 2^1143123426 is an apocalyptic number.

1143123426 is an abundant number, since it is smaller than the sum of its proper divisors (1333644036).

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

1143123426 is a wasteful number, since it uses less digits than its factorization.

1143123426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63506865 (or 63506862 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 1143123426 is about 33810.1083405540. The cubic root of 1143123426 is about 1045.5971117958.

Adding to 1143123426 its reverse (6243213411), we get a palindrome (7386336837).

The spelling of 1143123426 in words is "one billion, one hundred forty-three million, one hundred twenty-three thousand, four hundred twenty-six".