42425171 has 2 divisors, whose sum is σ = 42425172. Its totient is φ = 42425170.

The previous prime is 42425147. The next prime is 42425177. The reversal of 42425171 is 17152424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42425171 - 2¹⁸ = 42163027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42425171.

It is not a weakly prime, because it can be changed into another prime (42425177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21212585 + 21212586.

It is an arithmetic number, because the mean of its divisors is an integer number (21212586).

Almost surely, 2^42425171 is an apocalyptic number.

42425171 is a deficient number, since it is larger than the sum of its proper divisors (1).

42425171 is an equidigital number, since it uses as much as digits as its factorization.

42425171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240, while the sum is 26.

The square root of 42425171 is about 6513.4607544684. The cubic root of 42425171 is about 348.7716697095.

Adding to 42425171 its reverse (17152424), we get a palindrome (59577595).

The spelling of 42425171 in words is "forty-two million, four hundred twenty-five thousand, one hundred seventy-one".