542671 has 4 divisors (see below), whose sum is σ = 547072. Its totient is φ = 538272.

The previous prime is 542603. The next prime is 542683. The reversal of 542671 is 176245.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542671 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 (542071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2010 + ... + 2263.

It is an arithmetic number, because the mean of its divisors is an integer number (136768).

2⁵⁴²⁶⁷¹ is an apocalyptic number.

542671 is a deficient number, since it is larger than the sum of its proper divisors (4401).

542671 is a wasteful number, since it uses less digits than its factorization.

542671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4400.

The product of its digits is 1680, while the sum is 25.

The square root of 542671 is about 736.6620663506. The cubic root of 542671 is about 81.5665708738.

The spelling of 542671 in words is "five hundred forty-two thousand, six hundred seventy-one".