842319 has 10 divisors (see below), whose sum is σ = 1258400. Its totient is φ = 561492.

The previous prime is 842311. The next prime is 842321. The reversal of 842319 is 913248.

It is not a de Polignac number, because 842319 - 2³ = 842311 is a prime.

It is a super-2 number, since 2×842319² = 1419002595522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

842319 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 842292 and 842301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842311) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5119 + ... + 5280.

It is an arithmetic number, because the mean of its divisors is an integer number (125840).

2⁸⁴²³¹⁹ is an apocalyptic number.

842319 is a deficient number, since it is larger than the sum of its proper divisors (416081).

842319 is a wasteful number, since it uses less digits than its factorization.

842319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10411 (or 10402 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 842319 is about 917.7793852555. The cubic root of 842319 is about 94.4406278606.

The spelling of 842319 in words is "eight hundred forty-two thousand, three hundred nineteen".