42417523 has 2 divisors, whose sum is σ = 42417524. Its totient is φ = 42417522.

The previous prime is 42417491. The next prime is 42417553. The reversal of 42417523 is 32571424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42417523 - 2⁵ = 42417491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42417491 and 42417500.

It is not a weakly prime, because it can be changed into another prime (42417553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21208761 + 21208762.

It is an arithmetic number, because the mean of its divisors is an integer number (21208762).

Almost surely, 2^42417523 is an apocalyptic number.

42417523 is a deficient number, since it is larger than the sum of its proper divisors (1).

42417523 is an equidigital number, since it uses as much as digits as its factorization.

42417523 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 42417523 is about 6512.8736361149. The cubic root of 42417523 is about 348.7507107208.

Adding to 42417523 its reverse (32571424), we get a palindrome (74988947).

The spelling of 42417523 in words is "forty-two million, four hundred seventeen thousand, five hundred twenty-three".