1121430829 has 2 divisors, whose sum is σ = 1121430830. Its totient is φ = 1121430828.

The previous prime is 1121430767. The next prime is 1121430839. The reversal of 1121430829 is 9280341211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 845937225 + 275493604 = 29085^2 + 16598^2 .

It is an emirp because it is prime and its reverse (9280341211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1121430829 - 2¹³ = 1121422637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121430829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121430839) 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, 560715414 + 560715415.

It is an arithmetic number, because the mean of its divisors is an integer number (560715415).

Almost surely, 2^1121430829 is an apocalyptic number.

It is an amenable number.

1121430829 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121430829 is an equidigital number, since it uses as much as digits as its factorization.

1121430829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 1121430829 is about 33487.7713352203. The cubic root of 1121430829 is about 1038.9408685585.

The spelling of 1121430829 in words is "one billion, one hundred twenty-one million, four hundred thirty thousand, eight hundred twenty-nine".