2142800909 has 2 divisors, whose sum is σ = 2142800910. Its totient is φ = 2142800908.

The previous prime is 2142800893. The next prime is 2142800927. The reversal of 2142800909 is 9090082412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1658932900 + 483868009 = 40730^2 + 21997^2 .

It is a cyclic number.

It is not a de Polignac number, because 2142800909 - 2⁴ = 2142800893 is a prime.

It is a super-2 number, since 2×2142800909² = 9183191471222452562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2142800809) 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, 1071400454 + 1071400455.

It is an arithmetic number, because the mean of its divisors is an integer number (1071400455).

Almost surely, 2^2142800909 is an apocalyptic number.

It is an amenable number.

2142800909 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142800909 is an equidigital number, since it uses as much as digits as its factorization.

2142800909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 2142800909 is about 46290.3975895649. The cubic root of 2142800909 is about 1289.2207117481.

The spelling of 2142800909 in words is "two billion, one hundred forty-two million, eight hundred thousand, nine hundred nine".