542231 has 4 divisors (see below), whose sum is σ = 550392. Its totient is φ = 534072.

The previous prime is 542219. The next prime is 542237. The reversal of 542231 is 132245.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132245 = 5 ⋅26449.

It is a cyclic number.

It is not a de Polignac number, because 542231 - 2⁶ = 542167 is a prime.

It is a super-2 number, since 2×542231² = 588028914722, which contains 22 as substring.

It is a d-powerful number, because it can be written as 5⁵ + 4³ + 2¹³ + 2¹⁹ + 3⁸ + 1 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542237) 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, 3980 + ... + 4113.

It is an arithmetic number, because the mean of its divisors is an integer number (137598).

2⁵⁴²²³¹ is an apocalyptic number.

542231 is a deficient number, since it is larger than the sum of its proper divisors (8161).

542231 is an equidigital number, since it uses as much as digits as its factorization.

542231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8160.

The product of its digits is 240, while the sum is 17.

The square root of 542231 is about 736.3633613916. The cubic root of 542231 is about 81.5445200699.

Adding to 542231 its reverse (132245), we get a palindrome (674476).

The spelling of 542231 in words is "five hundred forty-two thousand, two hundred thirty-one".