4021243121344 has 28 divisors (see below), whose sum is σ = 7985806877224. Its totient is φ = 2009071309824.

The previous prime is 4021243121339. The next prime is 4021243121353. The reversal of 4021243121344 is 4431213421204.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24139014 + ... + 24305029.

Almost surely, 2^{4021243121344} is an apocalyptic number.

It is an amenable number.

4021243121344 is a deficient number, since it is larger than the sum of its proper divisors (3964563755880).

4021243121344 is a wasteful number, since it uses less digits than its factorization.

4021243121344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48445352 (or 48445342 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 4021243121344 its reverse (4431213421204), we get a palindrome (8452456542548).

The spelling of 4021243121344 in words is "four trillion, twenty-one billion, two hundred forty-three million, one hundred twenty-one thousand, three hundred forty-four".