902242109 has 2 divisors, whose sum is σ = 902242110. Its totient is φ = 902242108.

The previous prime is 902242097. The next prime is 902242123. The reversal of 902242109 is 901242209.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 876456025 + 25786084 = 29605^2 + 5078^2 .

It is a cyclic number.

It is not a de Polignac number, because 902242109 - 2⁴ = 902242093 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (902242609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 451121054 + 451121055.

It is an arithmetic number, because the mean of its divisors is an integer number (451121055).

Almost surely, 2^902242109 is an apocalyptic number.

It is an amenable number.

902242109 is a deficient number, since it is larger than the sum of its proper divisors (1).

902242109 is an equidigital number, since it uses as much as digits as its factorization.

902242109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 902242109 is about 30037.3452388855. The cubic root of 902242109 is about 966.2904724965.

The spelling of 902242109 in words is "nine hundred two million, two hundred forty-two thousand, one hundred nine".