542887 has 4 divisors (see below), whose sum is σ = 571480. Its totient is φ = 514296.

The previous prime is 542873. The next prime is 542891. The reversal of 542887 is 788245.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 788245 = 5 ⋅157649.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14268 + ... + 14305.

It is an arithmetic number, because the mean of its divisors is an integer number (142870).

2⁵⁴²⁸⁸⁷ is an apocalyptic number.

542887 is a deficient number, since it is larger than the sum of its proper divisors (28593).

542887 is a wasteful number, since it uses less digits than its factorization.

542887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28592.

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

The square root of 542887 is about 736.8086590154. The cubic root of 542887 is about 81.5773914522.

The spelling of 542887 in words is "five hundred forty-two thousand, eight hundred eighty-seven".