8120378041 has 4 divisors (see below), whose sum is σ = 8318436084. Its totient is φ = 7922320000.

The previous prime is 8120378039. The next prime is 8120378107. The reversal of 8120378041 is 1408730218.

It is a happy number.

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 2438384400 + 5681993641 = 49380^2 + 75379^2 .

It is a cyclic number.

It is not a de Polignac number, because 8120378041 - 2¹ = 8120378039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8120377988 and 8120378006.

It is not an unprimeable number, because it can be changed into a prime (8120378341) 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, 99028960 + ... + 99029041.

It is an arithmetic number, because the mean of its divisors is an integer number (2079609021).

Almost surely, 2^8120378041 is an apocalyptic number.

It is an amenable number.

8120378041 is a deficient number, since it is larger than the sum of its proper divisors (198058043).

8120378041 is a wasteful number, since it uses less digits than its factorization.

8120378041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198058042.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 8120378041 is about 90113.1402238320. The cubic root of 8120378041 is about 2009.9816043299.

The spelling of 8120378041 in words is "eight billion, one hundred twenty million, three hundred seventy-eight thousand, forty-one".