542215144220 has 24 divisors (see below), whose sum is σ = 1144048265808. Its totient is φ = 215858160000.

The previous prime is 542215144213. The next prime is 542215144241. The reversal of 542215144220 is 22441512245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64239281 + ... + 64247720.

It is an arithmetic number, because the mean of its divisors is an integer number (47668677742).

Almost surely, 2^542215144220 is an apocalyptic number.

It is an amenable number.

542215144220 is an abundant number, since it is smaller than the sum of its proper divisors (601833121588).

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

542215144220 is a wasteful number, since it uses less digits than its factorization.

542215144220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128487221 (or 128487219 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

Adding to 542215144220 its reverse (22441512245), we get a palindrome (564656656465).

The spelling of 542215144220 in words is "five hundred forty-two billion, two hundred fifteen million, one hundred forty-four thousand, two hundred twenty".