542390231 has 2 divisors, whose sum is σ = 542390232. Its totient is φ = 542390230.

The previous prime is 542390197. The next prime is 542390243. The reversal of 542390231 is 132093245.

542390231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 542390231 - 2¹⁰ = 542389207 is a prime.

It is a super-2 number, since 2×542390231² = 588374325368466722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 542390194 and 542390203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542392231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271195115 + 271195116.

It is an arithmetic number, because the mean of its divisors is an integer number (271195116).

Almost surely, 2^542390231 is an apocalyptic number.

542390231 is a deficient number, since it is larger than the sum of its proper divisors (1).

542390231 is an equidigital number, since it uses as much as digits as its factorization.

542390231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 542390231 is about 23289.2728740079. The cubic root of 542390231 is about 815.5250138215.

The spelling of 542390231 in words is "five hundred forty-two million, three hundred ninety thousand, two hundred thirty-one".