42923 has 2 divisors, whose sum is σ = 42924. Its totient is φ = 42922.
The previous prime is 42901. The next prime is 42929. The reversal of 42923 is 32924.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 42923 - 26 = 42859 is a prime.
It is a Sophie Germain prime.
It is a plaindrome in base 14.
It is a junction number, because it is equal to n+sod(n) for n = 42895 and 42904.
It is not a weakly prime, because it can be changed into another prime (42929) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21461 + 21462.
It is an arithmetic number, because the mean of its divisors is an integer number (21462).
242923 is an apocalyptic number.
42923 is a deficient number, since it is larger than the sum of its proper divisors (1).
42923 is an equidigital number, since it uses as much as digits as its factorization.
42923 is an evil number, because the sum of its binary digits is even.
The product of its digits is 432, while the sum is 20.
The square root of 42923 is about 207.1786668554. The cubic root of 42923 is about 35.0130563534.
Subtracting from 42923 its reverse (32924), we obtain a palindrome (9999).
The spelling of 42923 in words is "forty-two thousand, nine hundred twenty-three".
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