1942321 has 2 divisors, whose sum is σ = 1942322. Its totient is φ = 1942320.
The previous prime is 1942319. The next prime is 1942349. The reversal of 1942321 is 1232491.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 1852321 + 90000 = 1361^2 + 300^2 .
It is a cyclic number.
It is not a de Polignac number, because 1942321 - 21 = 1942319 is a prime.
It is a super-2 number, since 2×19423212 = 7545221734082, which contains 22 as substring.
Together with 1942319, it forms a pair of twin primes.
It is a Chen prime.
It is a junction number, because it is equal to n+sod(n) for n = 1942292 and 1942301.
It is not a weakly prime, because it can be changed into another prime (1942361) 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, 971160 + 971161.
It is an arithmetic number, because the mean of its divisors is an integer number (971161).
21942321 is an apocalyptic number.
It is an amenable number.
1942321 is a deficient number, since it is larger than the sum of its proper divisors (1).
1942321 is an equidigital number, since it uses as much as digits as its factorization.
1942321 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 432, while the sum is 22.
The square root of 1942321 is about 1393.6717691049. The cubic root of 1942321 is about 124.7690883679.
The spelling of 1942321 in words is "one million, nine hundred forty-two thousand, three hundred twenty-one".
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