542023 has 2 divisors, whose sum is σ = 542024. Its totient is φ = 542022.

The previous prime is 542021. The next prime is 542027. The reversal of 542023 is 320245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 542023 - 2¹ = 542021 is a prime.

Together with 542021, it forms a pair of twin primes.

542023 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 541988 and 542006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271011 + 271012.

It is an arithmetic number, because the mean of its divisors is an integer number (271012).

2⁵⁴²⁰²³ is an apocalyptic number.

542023 is a deficient number, since it is larger than the sum of its proper divisors (1).

542023 is an equidigital number, since it uses as much as digits as its factorization.

542023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 542023 is about 736.2221132240. Note that the first 3 decimals coincide. The cubic root of 542023 is about 81.5340919010.

Adding to 542023 its reverse (320245), we get a palindrome (862268).

The spelling of 542023 in words is "five hundred forty-two thousand, twenty-three".