42421423230431 has 4 divisors (see below), whose sum is σ = 48481626549072. Its totient is φ = 36361219911792.

The previous prime is 42421423230413. The next prime is 42421423230443. The reversal of 42421423230431 is 13403232412424.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42421423230431 - 2⁶ = 42421423230367 is a prime.

It is a super-2 number, since 2×42421423230431² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42421423230391 and 42421423230400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42421423230731) 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, 3030101659310 + ... + 3030101659323.

It is an arithmetic number, because the mean of its divisors is an integer number (12120406637268).

Almost surely, 2^{42421423230431} is an apocalyptic number.

42421423230431 is a deficient number, since it is larger than the sum of its proper divisors (6060203318641).

42421423230431 is an equidigital number, since it uses as much as digits as its factorization.

42421423230431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060203318640.

The product of its (nonzero) digits is 110592, while the sum is 35.

Adding to 42421423230431 its reverse (13403232412424), we get a palindrome (55824655642855).

The spelling of 42421423230431 in words is "forty-two trillion, four hundred twenty-one billion, four hundred twenty-three million, two hundred thirty thousand, four hundred thirty-one".