219485442 has 32 divisors (see below), whose sum is σ = 486736704. Its totient is φ = 65419200.

The previous prime is 219485429. The next prime is 219485479. The reversal of 219485442 is 244584912.

It is a self number, because there is not a number n which added to its sum of digits gives 219485442.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23233 + ... + 31284.

It is an arithmetic number, because the mean of its divisors is an integer number (15210522).

Almost surely, 2^219485442 is an apocalyptic number.

219485442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

219485442 is an abundant number, since it is smaller than the sum of its proper divisors (267251262).

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

219485442 is a wasteful number, since it uses less digits than its factorization.

219485442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54594.

The product of its digits is 92160, while the sum is 39.

The square root of 219485442 is about 14815.0410731796. The cubic root of 219485442 is about 603.2100563801.

The spelling of 219485442 in words is "two hundred nineteen million, four hundred eighty-five thousand, four hundred forty-two".