1000230421 has 2 divisors, whose sum is σ = 1000230422. Its totient is φ = 1000230420.

The previous prime is 1000230419. The next prime is 1000230431. The reversal of 1000230421 is 1240320001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 941876100 + 58354321 = 30690^2 + 7639^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000230421 - 2¹ = 1000230419 is a prime.

Together with 1000230419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000230401) 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 as a sum of consecutive naturals, namely, 500115210 + 500115211.

It is an arithmetic number, because the mean of its divisors is an integer number (500115211).

Almost surely, 2^1000230421 is an apocalyptic number.

It is an amenable number.

1000230421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000230421 is an equidigital number, since it uses as much as digits as its factorization.

1000230421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1000230421 is about 31626.4196677398. The cubic root of 1000230421 is about 1000.0768011014.

Adding to 1000230421 its reverse (1240320001), we get a palindrome (2240550422).

The spelling of 1000230421 in words is "one billion, two hundred thirty thousand, four hundred twenty-one".