219662042 has 8 divisors (see below), whose sum is σ = 329574036. Its totient is φ = 109804032.

The previous prime is 219661999. The next prime is 219662089. The reversal of 219662042 is 240266912.

It is a Cunningham number, because it is equal to 14821²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 219662041 + 1 = 14821^2 + 1^2 .

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, 1013 + ... + 20984.

Almost surely, 2^219662042 is an apocalyptic number.

219662042 is a deficient number, since it is larger than the sum of its proper divisors (109911994).

219662042 is a wasteful number, since it uses less digits than its factorization.

219662042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26992.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 219662042 is about 14821.0000337359. Note that the first 4 decimals coincide. The cubic root of 219662042 is about 603.3717957905.

The spelling of 219662042 in words is "two hundred nineteen million, six hundred sixty-two thousand, forty-two".