33421430424 has 64 divisors (see below), whose sum is σ = 85555641600. Its totient is φ = 10873892736.

The previous prime is 33421430389. The next prime is 33421430437. The reversal of 33421430424 is 42403412433.

It is a happy number.

It is a super-2 number, since 2×33421430424² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33421430391 and 33421430400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1598502 + ... + 1619274.

It is an arithmetic number, because the mean of its divisors is an integer number (1336806900).

Almost surely, 2^33421430424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33421430424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42777820800).

33421430424 is an abundant number, since it is smaller than the sum of its proper divisors (52134211176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33421430424 is a wasteful number, since it uses less digits than its factorization.

33421430424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22384 (or 22380 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 33421430424 its reverse (42403412433), we get a palindrome (75824842857).

The spelling of 33421430424 in words is "thirty-three billion, four hundred twenty-one million, four hundred thirty thousand, four hundred twenty-four".