1042313221 has 2 divisors, whose sum is σ = 1042313222. Its totient is φ = 1042313220.

The previous prime is 1042313189. The next prime is 1042313227. The reversal of 1042313221 is 1223132401.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 914397121 + 127916100 = 30239^2 + 11310^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042313221 - 2⁵ = 1042313189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042313227) 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, 521156610 + 521156611.

It is an arithmetic number, because the mean of its divisors is an integer number (521156611).

Almost surely, 2^1042313221 is an apocalyptic number.

It is an amenable number.

1042313221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042313221 is an equidigital number, since it uses as much as digits as its factorization.

1042313221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1042313221 is about 32284.8760412674. The cubic root of 1042313221 is about 1013.9100211672.

Adding to 1042313221 its reverse (1223132401), we get a palindrome (2265445622).

The spelling of 1042313221 in words is "one billion, forty-two million, three hundred thirteen thousand, two hundred twenty-one".