1210042243 has 2 divisors, whose sum is σ = 1210042244. Its totient is φ = 1210042242.

The previous prime is 1210042237. The next prime is 1210042247. The reversal of 1210042243 is 3422400121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210042243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1210042243.

It is not a weakly prime, because it can be changed into another prime (1210042247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605021121 + 605021122.

It is an arithmetic number, because the mean of its divisors is an integer number (605021122).

Almost surely, 2^1210042243 is an apocalyptic number.

1210042243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210042243 is an equidigital number, since it uses as much as digits as its factorization.

1210042243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1210042243 is about 34785.6614569854. The cubic root of 1210042243 is about 1065.6146372381.

Adding to 1210042243 its reverse (3422400121), we get a palindrome (4632442364).

The spelling of 1210042243 in words is "one billion, two hundred ten million, forty-two thousand, two hundred forty-three".