542787 has 8 divisors (see below), whose sum is σ = 827136. Its totient is φ = 310152.

The previous prime is 542783. The next prime is 542791. The reversal of 542787 is 787245.

It is an interprime number because it is at equal distance from previous prime (542783) and next prime (542791).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 542787 - 2² = 542783 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 542787.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12903 + ... + 12944.

It is an arithmetic number, because the mean of its divisors is an integer number (103392).

2⁵⁴²⁷⁸⁷ is an apocalyptic number.

542787 is a deficient number, since it is larger than the sum of its proper divisors (284349).

542787 is a wasteful number, since it uses less digits than its factorization.

542787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25857.

The product of its digits is 15680, while the sum is 33.

The square root of 542787 is about 736.7407956670. The cubic root of 542787 is about 81.5723822820.

Multiplying 542787 by its sum of digits (33), we get a palindrome (17911971).

It can be divided in two parts, 54278 and 7, that added together give a triangular number (54285 = T₃₂₉).

The spelling of 542787 in words is "five hundred forty-two thousand, seven hundred eighty-seven".