542205173 has 2 divisors, whose sum is σ = 542205174. Its totient is φ = 542205172.

The previous prime is 542205161. The next prime is 542205217. The reversal of 542205173 is 371502245.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 541865284 + 339889 = 23278^2 + 583^2 .

It is a cyclic number.

It is not a de Polignac number, because 542205173 - 2¹⁸ = 541943029 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542205133) 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, 271102586 + 271102587.

It is an arithmetic number, because the mean of its divisors is an integer number (271102587).

Almost surely, 2^542205173 is an apocalyptic number.

It is an amenable number.

542205173 is a deficient number, since it is larger than the sum of its proper divisors (1).

542205173 is an equidigital number, since it uses as much as digits as its factorization.

542205173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 542205173 is about 23285.2995041936. The cubic root of 542205173 is about 815.4322536728.

The spelling of 542205173 in words is "five hundred forty-two million, two hundred five thousand, one hundred seventy-three".