542809244 has 12 divisors (see below), whose sum is σ = 952914984. Its totient is φ = 270547824.

The previous prime is 542809243. The next prime is 542809247. The reversal of 542809244 is 442908245.

It is a happy number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 542809198 and 542809207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542809243) 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, 212774 + ... + 215309.

It is an arithmetic number, because the mean of its divisors is an integer number (79409582).

Almost surely, 2^542809244 is an apocalyptic number.

It is an amenable number.

542809244 is a deficient number, since it is larger than the sum of its proper divisors (410105740).

542809244 is a wasteful number, since it uses less digits than its factorization.

542809244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428404 (or 428402 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 542809244 is about 23298.2669741764. The cubic root of 542809244 is about 815.7349657500.

Subtracting from 542809244 its reverse (442908245), we obtain a palindrome (99900999).

The spelling of 542809244 in words is "five hundred forty-two million, eight hundred nine thousand, two hundred forty-four".