2421726287 has 4 divisors (see below), whose sum is σ = 2505234120. Its totient is φ = 2338218456.

The previous prime is 2421726253. The next prime is 2421726311. The reversal of 2421726287 is 7826271242.

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

It is a cyclic number.

It is not a de Polignac number, because 2421726287 - 2¹⁰ = 2421725263 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 (2421726227) 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, 41753873 + ... + 41753930.

It is an arithmetic number, because the mean of its divisors is an integer number (626308530).

Almost surely, 2^2421726287 is an apocalyptic number.

2421726287 is a deficient number, since it is larger than the sum of its proper divisors (83507833).

2421726287 is an equidigital number, since it uses as much as digits as its factorization.

2421726287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83507832.

The product of its digits is 150528, while the sum is 41.

The square root of 2421726287 is about 49211.0382637879. The cubic root of 2421726287 is about 1342.8938512250.

The spelling of 2421726287 in words is "two billion, four hundred twenty-one million, seven hundred twenty-six thousand, two hundred eighty-seven".