219521342 has 4 divisors (see below), whose sum is σ = 329282016. Its totient is φ = 109760670.

The previous prime is 219521327. The next prime is 219521353. The reversal of 219521342 is 243125912.

219521342 is digitally balanced in base 2, 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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54880334 + ... + 54880337.

It is an arithmetic number, because the mean of its divisors is an integer number (82320504).

Almost surely, 2^219521342 is an apocalyptic number.

219521342 is a deficient number, since it is larger than the sum of its proper divisors (109760674).

219521342 is a wasteful number, since it uses less digits than its factorization.

219521342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109760673.

The product of its digits is 4320, while the sum is 29.

The square root of 219521342 is about 14816.2526301356. The cubic root of 219521342 is about 603.2429424800.

The spelling of 219521342 in words is "two hundred nineteen million, five hundred twenty-one thousand, three hundred forty-two".