4001421054541 has 4 divisors (see below), whose sum is σ = 4001427429184. Its totient is φ = 4001414679900.

The previous prime is 4001421054529. The next prime is 4001421054551. The reversal of 4001421054541 is 1454501241004.

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 4001421054541 - 2²³ = 4001412665933 is a prime.

It is a super-2 number, since 2×4001421054541² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001421054551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2128515 + ... + 3540256.

It is an arithmetic number, because the mean of its divisors is an integer number (1000356857296).

Almost surely, 2^{4001421054541} is an apocalyptic number.

It is an amenable number.

4001421054541 is a deficient number, since it is larger than the sum of its proper divisors (6374643).

4001421054541 is an equidigital number, since it uses as much as digits as its factorization.

4001421054541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6374642.

The product of its (nonzero) digits is 12800, while the sum is 31.

Adding to 4001421054541 its reverse (1454501241004), we get a palindrome (5455922295545).

The spelling of 4001421054541 in words is "four trillion, one billion, four hundred twenty-one million, fifty-four thousand, five hundred forty-one".