218925242 has 8 divisors (see below), whose sum is σ = 329019732. Its totient is φ = 109252000.

The previous prime is 218925229. The next prime is 218925283. The reversal of 218925242 is 242529812.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 195412441 + 23512801 = 13979^2 + 4849^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104009 + ... + 106092.

Almost surely, 2^218925242 is an apocalyptic number.

218925242 is a deficient number, since it is larger than the sum of its proper divisors (110094490).

218925242 is a wasteful number, since it uses less digits than its factorization.

218925242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210624.

The product of its digits is 23040, while the sum is 35.

The square root of 218925242 is about 14796.1225326097. The cubic root of 218925242 is about 602.6964214405.

The spelling of 218925242 in words is "two hundred eighteen million, nine hundred twenty-five thousand, two hundred forty-two".