42344041421 has 16 divisors (see below), whose sum is σ = 48655910400. Its totient is φ = 36445172400.

The previous prime is 42344041409. The next prime is 42344041429. The reversal of 42344041421 is 12414044324.

It is a cyclic number.

It is not a de Polignac number, because 42344041421 - 2¹⁸ = 42343779277 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 (42344041429) 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 15 ways as a sum of consecutive naturals, for example, 265856 + ... + 394166.

It is an arithmetic number, because the mean of its divisors is an integer number (3040994400).

Almost surely, 2^42344041421 is an apocalyptic number.

It is an amenable number.

42344041421 is a deficient number, since it is larger than the sum of its proper divisors (6311868979).

42344041421 is a wasteful number, since it uses less digits than its factorization.

42344041421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129920.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 42344041421 its reverse (12414044324), we get a palindrome (54758085745).

The spelling of 42344041421 in words is "forty-two billion, three hundred forty-four million, forty-one thousand, four hundred twenty-one".