1143215426 has 8 divisors (see below), whose sum is σ = 1715757120. Its totient is φ = 571296388.

The previous prime is 1143215419. The next prime is 1143215429. The reversal of 1143215426 is 6245123411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×1143215426⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1143215429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151046 + ... + 158433.

It is an arithmetic number, because the mean of its divisors is an integer number (214469640).

Almost surely, 2^1143215426 is an apocalyptic number.

1143215426 is a deficient number, since it is larger than the sum of its proper divisors (572541694).

1143215426 is a wasteful number, since it uses less digits than its factorization.

1143215426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311328.

The product of its digits is 5760, while the sum is 29.

The square root of 1143215426 is about 33811.4688530386. The cubic root of 1143215426 is about 1045.6251613635.

Adding to 1143215426 its reverse (6245123411), we get a palindrome (7388338837).

The spelling of 1143215426 in words is "one billion, one hundred forty-three million, two hundred fifteen thousand, four hundred twenty-six".