142835813 has 2 divisors, whose sum is σ = 142835814. Its totient is φ = 142835812.

The previous prime is 142835801. The next prime is 142835839. The reversal of 142835813 is 318538241.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113912929 + 28922884 = 10673^2 + 5378^2 .

It is a cyclic number.

It is not a de Polignac number, because 142835813 - 2⁸ = 142835557 is a prime.

It is a Sophie Germain 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 (142835113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71417906 + 71417907.

It is an arithmetic number, because the mean of its divisors is an integer number (71417907).

Almost surely, 2^142835813 is an apocalyptic number.

It is an amenable number.

142835813 is a deficient number, since it is larger than the sum of its proper divisors (1).

142835813 is an equidigital number, since it uses as much as digits as its factorization.

142835813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 35.

The square root of 142835813 is about 11951.3937680925. The cubic root of 142835813 is about 522.7319397904.

The spelling of 142835813 in words is "one hundred forty-two million, eight hundred thirty-five thousand, eight hundred thirteen".