142807811949 has 24 divisors (see below), whose sum is σ = 226520783424. Its totient is φ = 85977000000.

The previous prime is 142807811849. The next prime is 142807811983. The reversal of 142807811949 is 949118708241.

It is not a de Polignac number, because 142807811949 - 2⁷ = 142807811821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142807811895 and 142807811904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142807811999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4761552 + ... + 4791449.

It is an arithmetic number, because the mean of its divisors is an integer number (9438365976).

Almost surely, 2^142807811949 is an apocalyptic number.

It is an amenable number.

142807811949 is a deficient number, since it is larger than the sum of its proper divisors (83712971475).

142807811949 is a wasteful number, since it uses less digits than its factorization.

142807811949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9553169 (or 9553166 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The spelling of 142807811949 in words is "one hundred forty-two billion, eight hundred seven million, eight hundred eleven thousand, nine hundred forty-nine".