42421404413 has 4 divisors (see below), whose sum is σ = 42423214848. Its totient is φ = 42419593980.

The previous prime is 42421404379. The next prime is 42421404469. The reversal of 42421404413 is 31440412424.

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 42421404413 - 2⁶ = 42421404349 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 (42421404013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 869603 + ... + 917088.

It is an arithmetic number, because the mean of its divisors is an integer number (10605803712).

Almost surely, 2^42421404413 is an apocalyptic number.

It is an amenable number.

42421404413 is a deficient number, since it is larger than the sum of its proper divisors (1810435).

42421404413 is a wasteful number, since it uses less digits than its factorization.

42421404413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1810434.

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

Adding to 42421404413 its reverse (31440412424), we get a palindrome (73861816837).

The spelling of 42421404413 in words is "forty-two billion, four hundred twenty-one million, four hundred four thousand, four hundred thirteen".