120002789 has 2 divisors, whose sum is σ = 120002790. Its totient is φ = 120002788.

The previous prime is 120002737. The next prime is 120002807. The reversal of 120002789 is 987200021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119793025 + 209764 = 10945^2 + 458^2 .

It is an emirp because it is prime and its reverse (987200021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120002789 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120002089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60001394 + 60001395.

It is an arithmetic number, because the mean of its divisors is an integer number (60001395).

Almost surely, 2^120002789 is an apocalyptic number.

It is an amenable number.

120002789 is a deficient number, since it is larger than the sum of its proper divisors (1).

120002789 is an equidigital number, since it uses as much as digits as its factorization.

120002789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 120002789 is about 10954.5784492147. The cubic root of 120002789 is about 493.2462360951.

The spelling of 120002789 in words is "one hundred twenty million, two thousand, seven hundred eighty-nine".