33040421240 has 64 divisors (see below), whose sum is σ = 76805314560. Its totient is φ = 12778796160.

The previous prime is 33040421237. The next prime is 33040421269. The reversal of 33040421240 is 4212404033.

It is a congruent number.

It is an unprimeable number.

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, 1505627 + ... + 1527413.

It is an arithmetic number, because the mean of its divisors is an integer number (1200083040).

Almost surely, 2^33040421240 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 33040421240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38402657280).

33040421240 is an abundant number, since it is smaller than the sum of its proper divisors (43764893320).

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

33040421240 is a wasteful number, since it uses less digits than its factorization.

33040421240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23052 (or 23048 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 33040421240 its reverse (4212404033), we get a palindrome (37252825273).

The spelling of 33040421240 in words is "thirty-three billion, forty million, four hundred twenty-one thousand, two hundred forty".