1143421013 has 16 divisors (see below), whose sum is σ = 1315626624. Its totient is φ = 973455360.

The previous prime is 1143420979. The next prime is 1143421061. The reversal of 1143421013 is 3101243411.

It is a cyclic number.

It is not a de Polignac number, because 1143421013 - 2²⁸ = 874985557 is a prime.

It is a super-2 number, since 2×1143421013² = 2614823225939892338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143421063) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 839453 + ... + 840813.

It is an arithmetic number, because the mean of its divisors is an integer number (82226664).

Almost surely, 2^1143421013 is an apocalyptic number.

It is an amenable number.

1143421013 is a deficient number, since it is larger than the sum of its proper divisors (172205611).

1143421013 is a wasteful number, since it uses less digits than its factorization.

1143421013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1143421013 is about 33814.5089125955. The cubic root of 1143421013 is about 1045.6878366477.

Adding to 1143421013 its reverse (3101243411), we get a palindrome (4244664424).

The spelling of 1143421013 in words is "one billion, one hundred forty-three million, four hundred twenty-one thousand, thirteen".