542299666 has 8 divisors (see below), whose sum is σ = 818631180. Its totient is φ = 269422608.

The previous prime is 542299649. The next prime is 542299669. The reversal of 542299666 is 666992245.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 484220025 + 58079641 = 22005^2 + 7621^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (542299669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 863221 + ... + 863848.

Almost surely, 2^542299666 is an apocalyptic number.

542299666 is a deficient number, since it is larger than the sum of its proper divisors (276331514).

542299666 is a wasteful number, since it uses less digits than its factorization.

542299666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1727228.

The product of its digits is 1399680, while the sum is 49.

The square root of 542299666 is about 23287.3284427390. The cubic root of 542299666 is about 815.4796208370.

The spelling of 542299666 in words is "five hundred forty-two million, two hundred ninety-nine thousand, six hundred sixty-six".