542172223 has 2 divisors, whose sum is σ = 542172224. Its totient is φ = 542172222.

The previous prime is 542172221. The next prime is 542172227. The reversal of 542172223 is 322271245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 542172223 - 2¹ = 542172221 is a prime.

Together with 542172221, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 542172191 and 542172200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542172221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271086111 + 271086112.

It is an arithmetic number, because the mean of its divisors is an integer number (271086112).

Almost surely, 2^542172223 is an apocalyptic number.

542172223 is a deficient number, since it is larger than the sum of its proper divisors (1).

542172223 is an equidigital number, since it uses as much as digits as its factorization.

542172223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 28.

The square root of 542172223 is about 23284.5919655037. The cubic root of 542172223 is about 815.4157353028.

The spelling of 542172223 in words is "five hundred forty-two million, one hundred seventy-two thousand, two hundred twenty-three".