1030044021 has 4 divisors (see below), whose sum is σ = 1373392032. Its totient is φ = 686696012.

The previous prime is 1030044013. The next prime is 1030044047. The reversal of 1030044021 is 1204400301.

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 1030044021 - 2³ = 1030044013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030040021) 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, 171674001 + ... + 171674006.

It is an arithmetic number, because the mean of its divisors is an integer number (343348008).

Almost surely, 2^1030044021 is an apocalyptic number.

It is an amenable number.

1030044021 is a deficient number, since it is larger than the sum of its proper divisors (343348011).

1030044021 is an equidigital number, since it uses as much as digits as its factorization.

1030044021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343348010.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1030044021 is about 32094.2988862508. The cubic root of 1030044021 is about 1009.9160211848.

Adding to 1030044021 its reverse (1204400301), we get a palindrome (2234444322).

The spelling of 1030044021 in words is "one billion, thirty million, forty-four thousand, twenty-one".