542215144221 has 8 divisors (see below), whose sum is σ = 723003131904. Its totient is φ = 361451959680.

The previous prime is 542215144213. The next prime is 542215144241. The reversal of 542215144221 is 122441512245.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 542215144221 - 2³ = 542215144213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542215144241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6149716 + ... + 6237261.

It is an arithmetic number, because the mean of its divisors is an integer number (90375391488).

Almost surely, 2^542215144221 is an apocalyptic number.

It is an amenable number.

542215144221 is a deficient number, since it is larger than the sum of its proper divisors (180787987683).

542215144221 is a wasteful number, since it uses less digits than its factorization.

542215144221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12401571.

The product of its digits is 25600, while the sum is 33.

Adding to 542215144221 its reverse (122441512245), we get a palindrome (664656656466).

The spelling of 542215144221 in words is "five hundred forty-two billion, two hundred fifteen million, one hundred forty-four thousand, two hundred twenty-one".