2842247821 has 8 divisors (see below), whose sum is σ = 3250488384. Its totient is φ = 2434558560.

The previous prime is 2842247819. The next prime is 2842247827. The reversal of 2842247821 is 1287422482.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2842247821 - 2¹ = 2842247819 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2842247827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126715 + ... + 147448.

It is an arithmetic number, because the mean of its divisors is an integer number (406311048).

Almost surely, 2^2842247821 is an apocalyptic number.

It is an amenable number.

2842247821 is a deficient number, since it is larger than the sum of its proper divisors (408240563).

2842247821 is a wasteful number, since it uses less digits than its factorization.

2842247821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275651.

The product of its digits is 114688, while the sum is 40.

The square root of 2842247821 is about 53312.7360112009. The cubic root of 2842247821 is about 1416.5132700775.

The spelling of 2842247821 in words is "two billion, eight hundred forty-two million, two hundred forty-seven thousand, eight hundred twenty-one".