40421444234401 has 4 divisors (see below), whose sum is σ = 40426386343600. Its totient is φ = 40416502125204.

The previous prime is 40421444234389. The next prime is 40421444234407. The reversal of 40421444234401 is 10443244412404.

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 40421444234401 - 2³⁹ = 39871688420513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40421444234407) 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, 2471042331 + ... + 2471058688.

It is an arithmetic number, because the mean of its divisors is an integer number (10106596585900).

Almost surely, 2^{40421444234401} is an apocalyptic number.

It is an amenable number.

40421444234401 is a deficient number, since it is larger than the sum of its proper divisors (4942109199).

40421444234401 is an equidigital number, since it uses as much as digits as its factorization.

40421444234401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4942109198.

The product of its (nonzero) digits is 196608, while the sum is 37.

Adding to 40421444234401 its reverse (10443244412404), we get a palindrome (50864688646805).

The spelling of 40421444234401 in words is "forty trillion, four hundred twenty-one billion, four hundred forty-four million, two hundred thirty-four thousand, four hundred one".