1030045021 has 4 divisors (see below), whose sum is σ = 1030109344. Its totient is φ = 1029980700.

The previous prime is 1030045019. The next prime is 1030045033. The reversal of 1030045021 is 1205400301.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1030045021 - 2¹ = 1030045019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1030044986 and 1030045004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030045001) 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, 12976 + ... + 47206.

It is an arithmetic number, because the mean of its divisors is an integer number (257527336).

Almost surely, 2^1030045021 is an apocalyptic number.

It is an amenable number.

1030045021 is a deficient number, since it is larger than the sum of its proper divisors (64323).

1030045021 is an equidigital number, since it uses as much as digits as its factorization.

1030045021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64322.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1030045021 is about 32094.3144653379. The cubic root of 1030045021 is about 1009.9163480043.

Adding to 1030045021 its reverse (1205400301), we get a palindrome (2235445322).

The spelling of 1030045021 in words is "one billion, thirty million, forty-five thousand, twenty-one".