33042320421 has 16 divisors (see below), whose sum is σ = 50151191040. Its totient is φ = 19154967920.

The previous prime is 33042320413. The next prime is 33042320491. The reversal of 33042320421 is 12402324033.

It is not a de Polignac number, because 33042320421 - 2³ = 33042320413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 33042320391 and 33042320400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33042320401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21766251 + ... + 21767768.

It is an arithmetic number, because the mean of its divisors is an integer number (3134449440).

Almost surely, 2^33042320421 is an apocalyptic number.

It is an amenable number.

33042320421 is a deficient number, since it is larger than the sum of its proper divisors (17108870619).

33042320421 is a wasteful number, since it uses less digits than its factorization.

33042320421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43534056.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 33042320421 its reverse (12402324033), we get a palindrome (45444644454).

The spelling of 33042320421 in words is "thirty-three billion, forty-two million, three hundred twenty thousand, four hundred twenty-one".