42170435 has 4 divisors (see below), whose sum is σ = 50604528. Its totient is φ = 33736344.

The previous prime is 42170407. The next prime is 42170449. The reversal of 42170435 is 53407124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42170435 - 2¹⁰ = 42169411 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 4217039 + ... + 4217048.

It is an arithmetic number, because the mean of its divisors is an integer number (12651132).

Almost surely, 2^42170435 is an apocalyptic number.

42170435 is a deficient number, since it is larger than the sum of its proper divisors (8434093).

42170435 is an equidigital number, since it uses as much as digits as its factorization.

42170435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8434092.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 42170435 is about 6493.8767311984. The cubic root of 42170435 is about 348.0722176937.

Adding to 42170435 its reverse (53407124), we get a palindrome (95577559).

The spelling of 42170435 in words is "forty-two million, one hundred seventy thousand, four hundred thirty-five".