1020444321 has 8 divisors (see below), whose sum is σ = 1465253440. Its totient is φ = 627965712.

The previous prime is 1020444311. The next prime is 1020444331. The reversal of 1020444321 is 1234440201.

It is an interprime number because it is at equal distance from previous prime (1020444311) and next prime (1020444331).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1020444321 - 2¹⁰ = 1020443297 is a prime.

It is a super-2 number, since 2×1020444321² = 2082613224522302082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020444301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13082581 + ... + 13082658.

It is an arithmetic number, because the mean of its divisors is an integer number (183156680).

Almost surely, 2^1020444321 is an apocalyptic number.

It is an amenable number.

1020444321 is a deficient number, since it is larger than the sum of its proper divisors (444809119).

1020444321 is a wasteful number, since it uses less digits than its factorization.

1020444321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26165255.

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

The square root of 1020444321 is about 31944.3942030523. The cubic root of 1020444321 is about 1006.7688529198.

Adding to 1020444321 its reverse (1234440201), we get a palindrome (2254884522).

The spelling of 1020444321 in words is "one billion, twenty million, four hundred forty-four thousand, three hundred twenty-one".