1043421213 has 4 divisors (see below), whose sum is σ = 1391228288. Its totient is φ = 695614140.

The previous prime is 1043421173. The next prime is 1043421221. The reversal of 1043421213 is 3121243401.

1043421213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 1043421213 - 2¹² = 1043417117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1043421213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1043421413) 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, 173903533 + ... + 173903538.

It is an arithmetic number, because the mean of its divisors is an integer number (347807072).

Almost surely, 2^1043421213 is an apocalyptic number.

It is an amenable number.

1043421213 is a deficient number, since it is larger than the sum of its proper divisors (347807075).

1043421213 is an equidigital number, since it uses as much as digits as its factorization.

1043421213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347807074.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1043421213 is about 32302.0310971307. The cubic root of 1043421213 is about 1014.2691602885.

Adding to 1043421213 its reverse (3121243401), we get a palindrome (4164664614).

The spelling of 1043421213 in words is "one billion, forty-three million, four hundred twenty-one thousand, two hundred thirteen".