1043143421 has 4 divisors (see below), whose sum is σ = 1044294432. Its totient is φ = 1041992412.

The previous prime is 1043143417. The next prime is 1043143429. The reversal of 1043143421 is 1243413401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1043143421 - 2² = 1043143417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1043143429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574145 + ... + 575958.

It is an arithmetic number, because the mean of its divisors is an integer number (261073608).

Almost surely, 2^1043143421 is an apocalyptic number.

It is an amenable number.

1043143421 is a deficient number, since it is larger than the sum of its proper divisors (1151011).

1043143421 is an equidigital number, since it uses as much as digits as its factorization.

1043143421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151010.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1043143421 is about 32297.7308955289. The cubic root of 1043143421 is about 1014.1791420348.

Adding to 1043143421 its reverse (1243413401), we get a palindrome (2286556822).

The spelling of 1043143421 in words is "one billion, forty-three million, one hundred forty-three thousand, four hundred twenty-one".