42185213 has 8 divisors (see below), whose sum is σ = 48320832. Its totient is φ = 36076896.

The previous prime is 42185159. The next prime is 42185219. The reversal of 42185213 is 31258124.

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 42185213 - 2¹⁰ = 42184189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42185219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3395 + ... + 9792.

It is an arithmetic number, because the mean of its divisors is an integer number (6040104).

Almost surely, 2^42185213 is an apocalyptic number.

It is an amenable number.

42185213 is a deficient number, since it is larger than the sum of its proper divisors (6135619).

42185213 is a wasteful number, since it uses less digits than its factorization.

42185213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13651.

The product of its digits is 1920, while the sum is 26.

The square root of 42185213 is about 6495.0144726552. The cubic root of 42185213 is about 348.1128718510.

The spelling of 42185213 in words is "forty-two million, one hundred eighty-five thousand, two hundred thirteen".