542181 has 8 divisors (see below), whose sum is σ = 765504. Its totient is φ = 340160.

The previous prime is 542167. The next prime is 542183. The reversal of 542181 is 181245.

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 542181 - 2⁵ = 542149 is a prime.

It is a super-2 number, since 2×542181² = 587920473522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542183) 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, 5265 + ... + 5366.

It is an arithmetic number, because the mean of its divisors is an integer number (95688).

2⁵⁴²¹⁸¹ is an apocalyptic number.

542181 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

542181 is a deficient number, since it is larger than the sum of its proper divisors (223323).

542181 is a wasteful number, since it uses less digits than its factorization.

542181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10651.

The product of its digits is 320, while the sum is 21.

The square root of 542181 is about 736.3294099790. The cubic root of 542181 is about 81.5420135421.

The spelling of 542181 in words is "five hundred forty-two thousand, one hundred eighty-one".