2421236641 has 4 divisors (see below), whose sum is σ = 2435735232. Its totient is φ = 2406738052.

The previous prime is 2421236639. The next prime is 2421236663. The reversal of 2421236641 is 1466321242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2421236641 - 2¹ = 2421236639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2421239641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7249045 + ... + 7249378.

It is an arithmetic number, because the mean of its divisors is an integer number (608933808).

Almost surely, 2^2421236641 is an apocalyptic number.

It is an amenable number.

2421236641 is a deficient number, since it is larger than the sum of its proper divisors (14498591).

2421236641 is a wasteful number, since it uses less digits than its factorization.

2421236641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14498590.

The product of its digits is 13824, while the sum is 31.

The square root of 2421236641 is about 49206.0630512135. The cubic root of 2421236641 is about 1342.8033390798.

Adding to 2421236641 its reverse (1466321242), we get a palindrome (3887557883).

The spelling of 2421236641 in words is "two billion, four hundred twenty-one million, two hundred thirty-six thousand, six hundred forty-one".