42123583 has 2 divisors, whose sum is σ = 42123584. Its totient is φ = 42123582.

The previous prime is 42123577. The next prime is 42123593. The reversal of 42123583 is 38532124.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42123583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42123593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21061791 + 21061792.

It is an arithmetic number, because the mean of its divisors is an integer number (21061792).

Almost surely, 2^42123583 is an apocalyptic number.

42123583 is a deficient number, since it is larger than the sum of its proper divisors (1).

42123583 is an equidigital number, since it uses as much as digits as its factorization.

42123583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 28.

The square root of 42123583 is about 6490.2683303543. The cubic root of 42123583 is about 347.9432654020.

The spelling of 42123583 in words is "forty-two million, one hundred twenty-three thousand, five hundred eighty-three".