42321005550 has 120 divisors (see below), whose sum is σ = 117741849456. Its totient is φ = 11271000960.

The previous prime is 42321005501. The next prime is 42321005611. The reversal of 42321005550 is 5550012324.

It is a happy number.

42321005550 is a `hidden beast` number, since 4 + 2 + 3 + 2 + 100 + 5 + 550 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 3326802 + ... + 3339498.

Almost surely, 2^42321005550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42321005550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58870924728).

42321005550 is an abundant number, since it is smaller than the sum of its proper divisors (75420843906).

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

42321005550 is a wasteful number, since it uses less digits than its factorization.

42321005550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13544 (or 13530 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 42321005550 its reverse (5550012324), we get a palindrome (47871017874).

The spelling of 42321005550 in words is "forty-two billion, three hundred twenty-one million, five thousand, five hundred fifty".