219392742 has 16 divisors (see below), whose sum is σ = 441582192. Its totient is φ = 72664800.

The previous prime is 219392737. The next prime is 219392749. The reversal of 219392742 is 247293912.

219392742 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 219392742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219392749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115509 + ... + 117392.

It is an arithmetic number, because the mean of its divisors is an integer number (27598887).

Almost surely, 2^219392742 is an apocalyptic number.

219392742 is an abundant number, since it is smaller than the sum of its proper divisors (222189450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

219392742 is a wasteful number, since it uses less digits than its factorization.

219392742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233063.

The product of its digits is 54432, while the sum is 39.

The square root of 219392742 is about 14811.9121655511. The cubic root of 219392742 is about 603.1251222028.

The spelling of 219392742 in words is "two hundred nineteen million, three hundred ninety-two thousand, seven hundred forty-two".