822142 has 4 divisors (see below), whose sum is σ = 1233216. Its totient is φ = 411070.

The previous prime is 822139. The next prime is 822161. The reversal of 822142 is 241228.

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

It is a super-3 number, since 3×822142³ = 1667100417333861864, which contains 333 as substring.

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, 205534 + ... + 205537.

It is an arithmetic number, because the mean of its divisors is an integer number (308304).

2⁸²²¹⁴² is an apocalyptic number.

822142 is a deficient number, since it is larger than the sum of its proper divisors (411074).

822142 is a wasteful number, since it uses less digits than its factorization.

822142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411073.

The product of its digits is 256, while the sum is 19.

The square root of 822142 is about 906.7204640902. The cubic root of 822142 is about 93.6804450011.

The spelling of 822142 in words is "eight hundred twenty-two thousand, one hundred forty-two".