8204142049 has 4 divisors (see below), whose sum is σ = 8358937236. Its totient is φ = 8049346864.

The previous prime is 8204142041. The next prime is 8204142059. The reversal of 8204142049 is 9402414028.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1966301649 + 6237840400 = 44343^2 + 78980^2 .

It is a cyclic number.

It is not a de Polignac number, because 8204142049 - 2³ = 8204142041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8204142041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77397514 + ... + 77397619.

It is an arithmetic number, because the mean of its divisors is an integer number (2089734309).

Almost surely, 2^8204142049 is an apocalyptic number.

It is an amenable number.

8204142049 is a deficient number, since it is larger than the sum of its proper divisors (154795187).

8204142049 is a wasteful number, since it uses less digits than its factorization.

8204142049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154795186.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 8204142049 is about 90576.7191335610. The cubic root of 8204142049 is about 2016.8691532160.

The spelling of 8204142049 in words is "eight billion, two hundred four million, one hundred forty-two thousand, forty-nine".