542213081 has 2 divisors, whose sum is σ = 542213082. Its totient is φ = 542213080.

The previous prime is 542213047. The next prime is 542213083. The reversal of 542213081 is 180312245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318979600 + 223233481 = 17860^2 + 14941^2 .

It is a cyclic number.

It is not a de Polignac number, because 542213081 - 2¹⁰ = 542212057 is a prime.

It is a super-2 number, since 2×542213081² = 587990050415025122, which contains 22 as substring.

Together with 542213083, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 542213081.

It is not a weakly prime, because it can be changed into another prime (542213083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271106540 + 271106541.

It is an arithmetic number, because the mean of its divisors is an integer number (271106541).

Almost surely, 2^542213081 is an apocalyptic number.

It is an amenable number.

542213081 is a deficient number, since it is larger than the sum of its proper divisors (1).

542213081 is an equidigital number, since it uses as much as digits as its factorization.

542213081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 542213081 is about 23285.4693102802. The cubic root of 542213081 is about 815.4362179821.

The spelling of 542213081 in words is "five hundred forty-two million, two hundred thirteen thousand, eighty-one".