42039323 has 2 divisors, whose sum is σ = 42039324. Its totient is φ = 42039322.

The previous prime is 42039311. The next prime is 42039353. The reversal of 42039323 is 32393024.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42039323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42039292 and 42039301.

It is not a weakly prime, because it can be changed into another prime (42039353) 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, 21019661 + 21019662.

It is an arithmetic number, because the mean of its divisors is an integer number (21019662).

Almost surely, 2^42039323 is an apocalyptic number.

42039323 is a deficient number, since it is larger than the sum of its proper divisors (1).

42039323 is an equidigital number, since it uses as much as digits as its factorization.

42039323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 42039323 is about 6483.7738239393. The cubic root of 42039323 is about 347.7111130279.

The spelling of 42039323 in words is "forty-two million, thirty-nine thousand, three hundred twenty-three".