1042310221 has 2 divisors, whose sum is σ = 1042310222. Its totient is φ = 1042310220.

The previous prime is 1042310207. The next prime is 1042310231. The reversal of 1042310221 is 1220132401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 985080996 + 57229225 = 31386^2 + 7565^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042310221 - 2¹¹ = 1042308173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1042310195 and 1042310204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042310231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521155110 + 521155111.

It is an arithmetic number, because the mean of its divisors is an integer number (521155111).

Almost surely, 2^1042310221 is an apocalyptic number.

It is an amenable number.

1042310221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042310221 is an equidigital number, since it uses as much as digits as its factorization.

1042310221 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1042310221 is about 32284.8295798507. The cubic root of 1042310221 is about 1013.9090484164.

Adding to 1042310221 its reverse (1220132401), we get a palindrome (2262442622).

The spelling of 1042310221 in words is "one billion, forty-two million, three hundred ten thousand, two hundred twenty-one".