542231243 has 4 divisors (see below), whose sum is σ = 547495728. Its totient is φ = 536966760.

The previous prime is 542231227. The next prime is 542231251. The reversal of 542231243 is 342132245.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 542231243 - 2⁴ = 542231227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542231203) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2632088 + ... + 2632293.

It is an arithmetic number, because the mean of its divisors is an integer number (136873932).

Almost surely, 2^542231243 is an apocalyptic number.

542231243 is a deficient number, since it is larger than the sum of its proper divisors (5264485).

542231243 is a wasteful number, since it uses less digits than its factorization.

542231243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5264484.

The product of its digits is 5760, while the sum is 26.

The square root of 542231243 is about 23285.8592927124. The cubic root of 542231243 is about 815.4453225130.

Adding to 542231243 its reverse (342132245), we get a palindrome (884363488).

The spelling of 542231243 in words is "five hundred forty-two million, two hundred thirty-one thousand, two hundred forty-three".