1143211246 has 4 divisors (see below), whose sum is σ = 1714816872. Its totient is φ = 571605622.

The previous prime is 1143211217. The next prime is 1143211249. The reversal of 1143211246 is 6421123411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6421123411 = 7433 ⋅863867.

It is a self number, because there is not a number n which added to its sum of digits gives 1143211246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143211249) 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 as a sum of consecutive naturals, namely, 285802810 + ... + 285802813.

It is an arithmetic number, because the mean of its divisors is an integer number (428704218).

Almost surely, 2^1143211246 is an apocalyptic number.

1143211246 is a deficient number, since it is larger than the sum of its proper divisors (571605626).

1143211246 is an equidigital number, since it uses as much as digits as its factorization.

1143211246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571605625.

The product of its digits is 1152, while the sum is 25.

The square root of 1143211246 is about 33811.4070396368. The cubic root of 1143211246 is about 1045.6238869701.

Adding to 1143211246 its reverse (6421123411), we get a palindrome (7564334657).

The spelling of 1143211246 in words is "one billion, one hundred forty-three million, two hundred eleven thousand, two hundred forty-six".