42123593 has 2 divisors, whose sum is σ = 42123594.
Its totient is φ = 42123592.
The previous prime is 42123583. The next prime is 42123619. The reversal of 42123593 is 39532124.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 39601849 + 2521744 = 6293^2 + 1588^2
It is a cyclic number.
It is not a de Polignac number, because 42123593 - 24 = 42123577 is a prime.
It is not a weakly prime, because it can be changed into another prime (42123583) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21061796 + 21061797.
It is an arithmetic number, because the mean of its divisors is an integer number (21061797).
Almost surely, 242123593 is an apocalyptic number.
It is an amenable number.
42123593 is a deficient number, since it is larger than the sum of its proper divisors (1).
42123593 is an equidigital number, since it uses as much as digits as its factorization.
42123593 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 6480, while the sum is 29.
The square root of 42123593 is about 6490.2691007384.
The cubic root of 42123593 is about 347.9432929356.
The spelling of 42123593 in words is "forty-two million, one hundred twenty-three thousand, five hundred ninety-three".