542788 has 6 divisors (see below), whose sum is σ = 949886. Its totient is φ = 271392.

The previous prime is 542783. The next prime is 542791. The reversal of 542788 is 887245.

It can be written as a sum of positive squares in only one way, i.e., 451584 + 91204 = 672^2 + 302^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542783) by changing a digit.

542788 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 (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67845 + ... + 67852.

2⁵⁴²⁷⁸⁸ is an apocalyptic number.

It is an amenable number.

542788 is a deficient number, since it is larger than the sum of its proper divisors (407098).

542788 is a wasteful number, since it uses less digits than its factorization.

542788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135701 (or 135699 counting only the distinct ones).

The product of its digits is 17920, while the sum is 34.

The square root of 542788 is about 736.7414743314. The cubic root of 542788 is about 81.5724323767.

The spelling of 542788 in words is "five hundred forty-two thousand, seven hundred eighty-eight".