842293 has 2 divisors, whose sum is σ = 842294. Its totient is φ = 842292.

The previous prime is 842291. The next prime is 842311. The reversal of 842293 is 392248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 628849 + 213444 = 793^2 + 462^2 .

It is a cyclic number.

It is not a de Polignac number, because 842293 - 2¹ = 842291 is a prime.

Together with 842291, it forms a pair of twin primes.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (842291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421146 + 421147.

It is an arithmetic number, because the mean of its divisors is an integer number (421147).

2⁸⁴²²⁹³ is an apocalyptic number.

It is an amenable number.

842293 is a deficient number, since it is larger than the sum of its proper divisors (1).

842293 is an equidigital number, since it uses as much as digits as its factorization.

842293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 28.

The square root of 842293 is about 917.7652205221. The cubic root of 842293 is about 94.4396561458.

It can be divided in two parts, 8422 and 93, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 842293 in words is "eight hundred forty-two thousand, two hundred ninety-three".