542236 has 6 divisors (see below), whose sum is σ = 948920. Its totient is φ = 271116.

The previous prime is 542219. The next prime is 542237. The reversal of 542236 is 632245.

It is a happy number.

It is a d-powerful number, because it can be written as 5⁵ + 4³ + 2¹³ + 2¹⁹ + 3⁸ + 6 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542237) by changing a digit.

542236 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67776 + ... + 67783.

2⁵⁴²²³⁶ is an apocalyptic number.

It is an amenable number.

542236 is a deficient number, since it is larger than the sum of its proper divisors (406684).

542236 is a wasteful number, since it uses less digits than its factorization.

542236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135563 (or 135561 counting only the distinct ones).

The product of its digits is 1440, while the sum is 22.

The square root of 542236 is about 736.3667564468. The cubic root of 542236 is about 81.5447707143.

Subtracting 542236 from its reverse (632245), we obtain a palindrome (90009).

The spelling of 542236 in words is "five hundred forty-two thousand, two hundred thirty-six".