842722 has 4 divisors (see below), whose sum is σ = 1264086. Its totient is φ = 421360.

The previous prime is 842701. The next prime is 842729. The reversal of 842722 is 227248.

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

It can be written as a sum of positive squares in only one way, i.e., 793881 + 48841 = 891^2 + 221^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210679 + ... + 210682.

2⁸⁴²⁷²² is an apocalyptic number.

842722 is a deficient number, since it is larger than the sum of its proper divisors (421364).

842722 is a wasteful number, since it uses less digits than its factorization.

842722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421363.

The product of its digits is 1792, while the sum is 25.

The square root of 842722 is about 917.9989106747. The cubic root of 842722 is about 94.4556868842.

The spelling of 842722 in words is "eight hundred forty-two thousand, seven hundred twenty-two".