219142 has 16 divisors (see below), whose sum is σ = 410112. Its totient is φ = 85320.

The previous prime is 219133. The next prime is 219143. The reversal of 219142 is 241912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219143) by changing a digit.

219142 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 558 + ... + 865.

It is an arithmetic number, because the mean of its divisors is an integer number (25632).

2²¹⁹¹⁴² is an apocalyptic number.

219142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

219142 is a deficient number, since it is larger than the sum of its proper divisors (190970).

219142 is a wasteful number, since it uses less digits than its factorization.

219142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443.

The product of its digits is 144, while the sum is 19.

The square root of 219142 is about 468.1260514007. The cubic root of 219142 is about 60.2895265847.

It can be divided in two parts, 219 and 142, that added together give a square (361 = 19²).

The spelling of 219142 in words is "two hundred nineteen thousand, one hundred forty-two".