542809966 has 8 divisors (see below), whose sum is σ = 862110000. Its totient is φ = 255439968.

The previous prime is 542809961. The next prime is 542809973. The reversal of 542809966 is 669908245.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542809961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7982466 + ... + 7982533.

It is an arithmetic number, because the mean of its divisors is an integer number (107763750).

Almost surely, 2^542809966 is an apocalyptic number.

542809966 is a deficient number, since it is larger than the sum of its proper divisors (319300034).

542809966 is a wasteful number, since it uses less digits than its factorization.

542809966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15965018.

The product of its (nonzero) digits is 933120, while the sum is 49.

The square root of 542809966 is about 23298.2824688860. The cubic root of 542809966 is about 815.7353274243.

It can be divided in two parts, 54280 and 9966, that added together give a palindrome (64246).

The spelling of 542809966 in words is "five hundred forty-two million, eight hundred nine thousand, nine hundred sixty-six".