1030144021 has 4 divisors (see below), whose sum is σ = 1030340844. Its totient is φ = 1029947200.

The previous prime is 1030144013. The next prime is 1030144069. The reversal of 1030144021 is 1204410301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1204410301 = 41 ⋅29375861.

It can be written as a sum of positive squares in 2 ways, for example, as 580279921 + 449864100 = 24089^2 + 21210^2 .

It is a cyclic number.

It is not a de Polignac number, because 1030144021 - 2³ = 1030144013 is a prime.

It is a super-2 number, since 2×1030144021² = 2122393408004096882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1030143986 and 1030144004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030144001) 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, 90340 + ... + 101101.

It is an arithmetic number, because the mean of its divisors is an integer number (257585211).

Almost surely, 2^1030144021 is an apocalyptic number.

It is an amenable number.

1030144021 is a deficient number, since it is larger than the sum of its proper divisors (196823).

1030144021 is an equidigital number, since it uses as much as digits as its factorization.

1030144021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196822.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1030144021 is about 32095.8567575318. The cubic root of 1030144021 is about 1009.9487020968.

Adding to 1030144021 its reverse (1204410301), we get a palindrome (2234554322).

The spelling of 1030144021 in words is "one billion, thirty million, one hundred forty-four thousand, twenty-one".