2421340443 has 24 divisors (see below), whose sum is σ = 3527862000. Its totient is φ = 1600254144.

The previous prime is 2421340393. The next prime is 2421340459. The reversal of 2421340443 is 3440431242.

It is a happy number.

2421340443 is a `hidden beast` number, since 2 + 4 + 213 + 4 + 0 + 443 = 666.

It is not a de Polignac number, because 2421340443 - 2¹² = 2421336347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2421340463) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 828621 + ... + 831537.

It is an arithmetic number, because the mean of its divisors is an integer number (146994250).

Almost surely, 2^2421340443 is an apocalyptic number.

2421340443 is a deficient number, since it is larger than the sum of its proper divisors (1106521557).

2421340443 is a wasteful number, since it uses less digits than its factorization.

2421340443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3691 (or 3688 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 2421340443 is about 49207.1178083009. The cubic root of 2421340443 is about 1342.8225281281.

Adding to 2421340443 its reverse (3440431242), we get a palindrome (5861771685).

The spelling of 2421340443 in words is "two billion, four hundred twenty-one million, three hundred forty thousand, four hundred forty-three".