1290229043 has 2 divisors, whose sum is σ = 1290229044. Its totient is φ = 1290229042.

The previous prime is 1290229033. The next prime is 1290229069. The reversal of 1290229043 is 3409220921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1290229043 - 2²⁰ = 1289180467 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1290229033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645114521 + 645114522.

It is an arithmetic number, because the mean of its divisors is an integer number (645114522).

Almost surely, 2^1290229043 is an apocalyptic number.

1290229043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1290229043 is an equidigital number, since it uses as much as digits as its factorization.

1290229043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 1290229043 is about 35919.7583928400. The cubic root of 1290229043 is about 1088.6516568458.

Adding to 1290229043 its reverse (3409220921), we get a palindrome (4699449964).

The spelling of 1290229043 in words is "one billion, two hundred ninety million, two hundred twenty-nine thousand, forty-three".