218202742 has 4 divisors (see below), whose sum is σ = 327304116. Its totient is φ = 109101370.

The previous prime is 218202739. The next prime is 218202763. The reversal of 218202742 is 247202812.

218202742 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×218202742² = 95224873232637128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 218202742.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 54550684 + ... + 54550687.

It is an arithmetic number, because the mean of its divisors is an integer number (81826029).

Almost surely, 2^218202742 is an apocalyptic number.

218202742 is a deficient number, since it is larger than the sum of its proper divisors (109101374).

218202742 is a wasteful number, since it uses less digits than its factorization.

218202742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109101373.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 218202742 is about 14771.6871751334. The cubic root of 218202742 is about 602.0326818238.

The spelling of 218202742 in words is "two hundred eighteen million, two hundred two thousand, seven hundred forty-two".