42166532220 has 96 divisors (see below), whose sum is σ = 122277206016. Its totient is φ = 10850112000.

The previous prime is 42166532207. The next prime is 42166532251. The reversal of 42166532220 is 2223566124.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 94920 + ... + 305520.

It is an arithmetic number, because the mean of its divisors is an integer number (1273720896).

Almost surely, 2^42166532220 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 42166532220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61138603008).

42166532220 is an abundant number, since it is smaller than the sum of its proper divisors (80110673796).

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

42166532220 is a wasteful number, since it uses less digits than its factorization.

42166532220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210731 (or 210729 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The spelling of 42166532220 in words is "forty-two billion, one hundred sixty-six million, five hundred thirty-two thousand, two hundred twenty".