42404420433 has 4 divisors (see below), whose sum is σ = 56539227248. Its totient is φ = 28269613620.

The previous prime is 42404420423. The next prime is 42404420449. The reversal of 42404420433 is 33402440424.

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 not a de Polignac number, because 42404420433 - 2⁶ = 42404420369 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42404420433.

It is not an unprimeable number, because it can be changed into a prime (42404420423) 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, 7067403403 + ... + 7067403408.

It is an arithmetic number, because the mean of its divisors is an integer number (14134806812).

Almost surely, 2^42404420433 is an apocalyptic number.

It is an amenable number.

42404420433 is a deficient number, since it is larger than the sum of its proper divisors (14134806815).

42404420433 is a wasteful number, since it uses less digits than its factorization.

42404420433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14134806814.

The product of its (nonzero) digits is 36864, while the sum is 30.

Adding to 42404420433 its reverse (33402440424), we get a palindrome (75806860857).

The spelling of 42404420433 in words is "forty-two billion, four hundred four million, four hundred twenty thousand, four hundred thirty-three".