219046442 has 4 divisors (see below), whose sum is σ = 328569666. Its totient is φ = 109523220.

The previous prime is 219046427. The next prime is 219046447. The reversal of 219046442 is 244640912.

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

It can be written as a sum of positive squares in only one way, i.e., 215766721 + 3279721 = 14689^2 + 1811^2 .

It is a junction number, because it is equal to n+sod(n) for n = 219046399 and 219046408.

It is not an unprimeable number, because it can be changed into a prime (219046447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54761609 + ... + 54761612.

Almost surely, 2^219046442 is an apocalyptic number.

219046442 is a deficient number, since it is larger than the sum of its proper divisors (109523224).

219046442 is a wasteful number, since it uses less digits than its factorization.

219046442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109523223.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 219046442 is about 14800.2176335350. The cubic root of 219046442 is about 602.8076212422.

The spelling of 219046442 in words is "two hundred nineteen million, forty-six thousand, four hundred forty-two".