42421142423 has 16 divisors (see below), whose sum is σ = 49010697216. Its totient is φ = 36288109440.

The previous prime is 42421142399. The next prime is 42421142441. The reversal of 42421142423 is 32424112424.

It is a happy number.

It is not a de Polignac number, because 42421142423 - 2¹⁴ = 42421126039 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 (42421142443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 912890 + ... + 958232.

It is an arithmetic number, because the mean of its divisors is an integer number (3063168576).

Almost surely, 2^42421142423 is an apocalyptic number.

42421142423 is a deficient number, since it is larger than the sum of its proper divisors (6589554793).

42421142423 is a wasteful number, since it uses less digits than its factorization.

42421142423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50374.

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

Adding to 42421142423 its reverse (32424112424), we get a palindrome (74845254847).

The spelling of 42421142423 in words is "forty-two billion, four hundred twenty-one million, one hundred forty-two thousand, four hundred twenty-three".