142802609 has 2 divisors, whose sum is σ = 142802610. Its totient is φ = 142802608.

The previous prime is 142802593. The next prime is 142802659. The reversal of 142802609 is 906208241.

142802609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107578384 + 35224225 = 10372^2 + 5935^2 .

It is a cyclic number.

It is not a de Polignac number, because 142802609 - 2⁴ = 142802593 is a prime.

It is equal to p_8061485 and since 142802609 and 8061485 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (142802659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71401304 + 71401305.

It is an arithmetic number, because the mean of its divisors is an integer number (71401305).

Almost surely, 2^142802609 is an apocalyptic number.

It is an amenable number.

142802609 is a deficient number, since it is larger than the sum of its proper divisors (1).

142802609 is an equidigital number, since it uses as much as digits as its factorization.

142802609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 142802609 is about 11950.0045606686. The cubic root of 142802609 is about 522.6914314238.

The spelling of 142802609 in words is "one hundred forty-two million, eight hundred two thousand, six hundred nine".