42524173 has 2 divisors, whose sum is σ = 42524174. Its totient is φ = 42524172.

The previous prime is 42524159. The next prime is 42524177. The reversal of 42524173 is 37142524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26347689 + 16176484 = 5133^2 + 4022^2 .

It is a cyclic number.

It is not a de Polignac number, because 42524173 - 2¹³ = 42515981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42524177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21262086 + 21262087.

It is an arithmetic number, because the mean of its divisors is an integer number (21262087).

Almost surely, 2^42524173 is an apocalyptic number.

It is an amenable number.

42524173 is a deficient number, since it is larger than the sum of its proper divisors (1).

42524173 is an equidigital number, since it uses as much as digits as its factorization.

42524173 is an evil number, because the sum of its binary digits is even.

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

The square root of 42524173 is about 6521.0561261194. The cubic root of 42524173 is about 349.0427530321.

Adding to 42524173 its reverse (37142524), we get a palindrome (79666697).

The spelling of 42524173 in words is "forty-two million, five hundred twenty-four thousand, one hundred seventy-three".