1210402243 has 2 divisors, whose sum is σ = 1210402244. Its totient is φ = 1210402242.

The previous prime is 1210402241. The next prime is 1210402247. The reversal of 1210402243 is 3422040121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1210402243 - 2¹ = 1210402241 is a prime.

Together with 1210402241, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1210402243.

It is not a weakly prime, because it can be changed into another prime (1210402241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605201121 + 605201122.

It is an arithmetic number, because the mean of its divisors is an integer number (605201122).

Almost surely, 2^1210402243 is an apocalyptic number.

1210402243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210402243 is an equidigital number, since it uses as much as digits as its factorization.

1210402243 is an evil number, because the sum of its binary digits is even.

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

The square root of 1210402243 is about 34790.8356180187. The cubic root of 1210402243 is about 1065.7203038609.

Adding to 1210402243 its reverse (3422040121), we get a palindrome (4632442364).

The spelling of 1210402243 in words is "one billion, two hundred ten million, four hundred two thousand, two hundred forty-three".