142306813 has 16 divisors (see below), whose sum is σ = 165269376. Its totient is φ = 121098240.

The previous prime is 142306793. The next prime is 142306867. The reversal of 142306813 is 318603241.

It is a cyclic number.

It is not a de Polignac number, because 142306813 - 2⁹ = 142306301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142306883) 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 in 15 ways as a sum of consecutive naturals, for example, 34120 + ... + 38062.

It is an arithmetic number, because the mean of its divisors is an integer number (10329336).

Almost surely, 2^142306813 is an apocalyptic number.

It is an amenable number.

142306813 is a deficient number, since it is larger than the sum of its proper divisors (22962563).

142306813 is a wasteful number, since it uses less digits than its factorization.

142306813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4164.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 142306813 is about 11929.2419289744. The cubic root of 142306813 is about 522.0858196760.

The spelling of 142306813 in words is "one hundred forty-two million, three hundred six thousand, eight hundred thirteen".