542221242 has 16 divisors (see below), whose sum is σ = 1084746432. Its totient is φ = 180689760.

The previous prime is 542221237. The next prime is 542221283. The reversal of 542221242 is 242122245.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15267 + ... + 36297.

It is an arithmetic number, because the mean of its divisors is an integer number (67796652).

Almost surely, 2^542221242 is an apocalyptic number.

542221242 is an abundant number, since it is smaller than the sum of its proper divisors (542525190).

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

542221242 is a wasteful number, since it uses less digits than its factorization.

542221242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25333.

The product of its digits is 2560, while the sum is 24.

The square root of 542221242 is about 23285.6445476607. The cubic root of 542221242 is about 815.4403090807.

Adding to 542221242 its reverse (242122245), we get a palindrome (784343487).

The spelling of 542221242 in words is "five hundred forty-two million, two hundred twenty-one thousand, two hundred forty-two".