42310523 has 2 divisors, whose sum is σ = 42310524. Its totient is φ = 42310522.

The previous prime is 42310519. The next prime is 42310531. The reversal of 42310523 is 32501324.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42310523 - 2² = 42310519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42310495 and 42310504.

It is not a weakly prime, because it can be changed into another prime (42310553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21155261 + 21155262.

It is an arithmetic number, because the mean of its divisors is an integer number (21155262).

Almost surely, 2^42310523 is an apocalyptic number.

42310523 is a deficient number, since it is larger than the sum of its proper divisors (1).

42310523 is an equidigital number, since it uses as much as digits as its factorization.

42310523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 42310523 is about 6504.6539492889. The cubic root of 42310523 is about 348.4572176486.

Adding to 42310523 its reverse (32501324), we get a palindrome (74811847).

The spelling of 42310523 in words is "forty-two million, three hundred ten thousand, five hundred twenty-three".