1024421 has 2 divisors, whose sum is σ = 1024422. Its totient is φ = 1024420.

The previous prime is 1024411. The next prime is 1024427. The reversal of 1024421 is 1244201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 940900 + 83521 = 970^2 + 289^2 .

It is a cyclic number.

It is not a de Polignac number, because 1024421 - 2⁶ = 1024357 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1024396 and 1024405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1024427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512210 + 512211.

It is an arithmetic number, because the mean of its divisors is an integer number (512211).

2^1024421 is an apocalyptic number.

It is an amenable number.

1024421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1024421 is an equidigital number, since it uses as much as digits as its factorization.

1024421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1024421 is about 1012.1368484548. The cubic root of 1024421 is about 100.8074952959.

Adding to 1024421 its reverse (1244201), we get a palindrome (2268622).

The spelling of 1024421 in words is "one million, twenty-four thousand, four hundred twenty-one".