40542055421 has 8 divisors (see below), whose sum is σ = 46343482944. Its totient is φ = 34743054240.

The previous prime is 40542055339. The next prime is 40542055423. The reversal of 40542055421 is 12455024504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40542055421 - 2¹⁴ = 40542039037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40542055423) 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 7 ways as a sum of consecutive naturals, for example, 570635 + ... + 637736.

It is an arithmetic number, because the mean of its divisors is an integer number (5792935368).

Almost surely, 2^40542055421 is an apocalyptic number.

It is an amenable number.

40542055421 is a deficient number, since it is larger than the sum of its proper divisors (5801427523).

40542055421 is a wasteful number, since it uses less digits than its factorization.

40542055421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213171.

The product of its (nonzero) digits is 32000, while the sum is 32.

Adding to 40542055421 its reverse (12455024504), we get a palindrome (52997079925).

The spelling of 40542055421 in words is "forty billion, five hundred forty-two million, fifty-five thousand, four hundred twenty-one".