42174523 has 2 divisors, whose sum is σ = 42174524. Its totient is φ = 42174522.

The previous prime is 42174521. The next prime is 42174551. The reversal of 42174523 is 32547124.

It is an a-pointer prime, because the next prime (42174551) can be obtained adding 42174523 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42174523 - 2¹ = 42174521 is a prime.

Together with 42174521, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 42174491 and 42174500.

It is not a weakly prime, because it can be changed into another prime (42174521) 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, 21087261 + 21087262.

It is an arithmetic number, because the mean of its divisors is an integer number (21087262).

Almost surely, 2^42174523 is an apocalyptic number.

42174523 is a deficient number, since it is larger than the sum of its proper divisors (1).

42174523 is an equidigital number, since it uses as much as digits as its factorization.

42174523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 28.

The square root of 42174523 is about 6494.1914816242. The cubic root of 42174523 is about 348.0834646985.

The spelling of 42174523 in words is "forty-two million, one hundred seventy-four thousand, five hundred twenty-three".