1043244021 has 16 divisors (see below), whose sum is σ = 1428394688. Its totient is φ = 677030400.

The previous prime is 1043244019. The next prime is 1043244029. The reversal of 1043244021 is 1204423401.

It is not a de Polignac number, because 1043244021 - 2¹ = 1043244019 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 (1043244029) 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 15 ways as a sum of consecutive naturals, for example, 11635 + ... + 47136.

It is an arithmetic number, because the mean of its divisors is an integer number (89274668).

Almost surely, 2^1043244021 is an apocalyptic number.

It is an amenable number.

1043244021 is a deficient number, since it is larger than the sum of its proper divisors (385150667).

1043244021 is an equidigital number, since it uses as much as digits as its factorization.

1043244021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58932.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1043244021 is about 32299.2882429319. The cubic root of 1043244021 is about 1014.2117432221.

Adding to 1043244021 its reverse (1204423401), we get a palindrome (2247667422).

It can be divided in two parts, 104324 and 4021, that added together give a triangular number (108345 = T₄₆₅).

The spelling of 1043244021 in words is "one billion, forty-three million, two hundred forty-four thousand, twenty-one".