242120220554 has 8 divisors (see below), whose sum is σ = 363215991780. Its totient is φ = 121048223296.

The previous prime is 242120220541. The next prime is 242120220571. The reversal of 242120220554 is 455022021242.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 223941900625 + 18178319929 = 473225^2 + 134827^2 .

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

It is a super-2 number, since 2×242120220554² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5918009 + ... + 5958780.

Almost surely, 2^242120220554 is an apocalyptic number.

242120220554 is a deficient number, since it is larger than the sum of its proper divisors (121095771226).

242120220554 is a wasteful number, since it uses less digits than its factorization.

242120220554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11886984.

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 242120220554 its reverse (455022021242), we get a palindrome (697142241796).

The spelling of 242120220554 in words is "two hundred forty-two billion, one hundred twenty million, two hundred twenty thousand, five hundred fifty-four".