1042202321 has 2 divisors, whose sum is σ = 1042202322. Its totient is φ = 1042202320.

The previous prime is 1042202257. The next prime is 1042202327. The reversal of 1042202321 is 1232022401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 820192321 + 222010000 = 28639^2 + 14900^2 .

It is an emirp because it is prime and its reverse (1232022401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1042202321 - 2⁶ = 1042202257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1042202321.

It is not a weakly prime, because it can be changed into another prime (1042202327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521101160 + 521101161.

It is an arithmetic number, because the mean of its divisors is an integer number (521101161).

Almost surely, 2^1042202321 is an apocalyptic number.

It is an amenable number.

1042202321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042202321 is an equidigital number, since it uses as much as digits as its factorization.

1042202321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1042202321 is about 32283.1584731110. The cubic root of 1042202321 is about 1013.8740605726.

Adding to 1042202321 its reverse (1232022401), we get a palindrome (2274224722).

The spelling of 1042202321 in words is "one billion, forty-two million, two hundred two thousand, three hundred twenty-one".