6442022401 has 4 divisors (see below), whose sum is σ = 6442993600. Its totient is φ = 6441051204.

The previous prime is 6442022399. The next prime is 6442022423. The reversal of 6442022401 is 1042202446.

It is a happy number.

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 6442022401 - 2¹ = 6442022399 is a prime.

It is a super-2 number, since 2×6442022401² = 82999305229971609602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6442022471) 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, 475581 + ... + 488938.

It is an arithmetic number, because the mean of its divisors is an integer number (1610748400).

Almost surely, 2^6442022401 is an apocalyptic number.

It is an amenable number.

6442022401 is a deficient number, since it is larger than the sum of its proper divisors (971199).

6442022401 is an equidigital number, since it uses as much as digits as its factorization.

6442022401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971198.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 6442022401 is about 80262.2102922664. The cubic root of 6442022401 is about 1860.6902283765.

Adding to 6442022401 its reverse (1042202446), we get a palindrome (7484224847).

The spelling of 6442022401 in words is "six billion, four hundred forty-two million, twenty-two thousand, four hundred one".