542861 has 8 divisors (see below), whose sum is σ = 627264. Its totient is φ = 464320.

The previous prime is 542837. The next prime is 542873. The reversal of 542861 is 168245.

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

It is a cyclic number.

It is not a de Polignac number, because 542861 - 2⁶ = 542797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 542861.

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 542861.

It is not an unprimeable number, because it can be changed into a prime (542821) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1265 + ... + 1638.

It is an arithmetic number, because the mean of its divisors is an integer number (78408).

2⁵⁴²⁸⁶¹ is an apocalyptic number.

It is an amenable number.

542861 is a deficient number, since it is larger than the sum of its proper divisors (84403).

542861 is a wasteful number, since it uses less digits than its factorization.

542861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2931.

The product of its digits is 1920, while the sum is 26.

The square root of 542861 is about 736.7910151461. The cubic root of 542861 is about 81.5760891271.

The spelling of 542861 in words is "five hundred forty-two thousand, eight hundred sixty-one".