42170447 has 8 divisors (see below), whose sum is σ = 47488512. Its totient is φ = 37099800.

The previous prime is 42170407. The next prime is 42170449. The reversal of 42170447 is 74407124.

42170447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42170447 - 2⁶ = 42170383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42170449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61493 + ... + 62174.

It is an arithmetic number, because the mean of its divisors is an integer number (5936064).

Almost surely, 2^42170447 is an apocalyptic number.

42170447 is a deficient number, since it is larger than the sum of its proper divisors (5318065).

42170447 is a wasteful number, since it uses less digits than its factorization.

42170447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123709.

The product of its (nonzero) digits is 6272, while the sum is 29.

The square root of 42170447 is about 6493.8776551457. The cubic root of 42170447 is about 348.0722507095.

The spelling of 42170447 in words is "forty-two million, one hundred seventy thousand, four hundred forty-seven".