42018193 has 4 divisors (see below), whose sum is σ = 48020800. Its totient is φ = 36015588.

The previous prime is 42018173. The next prime is 42018209. The reversal of 42018193 is 39181024.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42018193 - 2⁵ = 42018161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42018103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3001293 + ... + 3001306.

It is an arithmetic number, because the mean of its divisors is an integer number (12005200).

Almost surely, 2^42018193 is an apocalyptic number.

It is an amenable number.

42018193 is a deficient number, since it is larger than the sum of its proper divisors (6002607).

42018193 is an equidigital number, since it uses as much as digits as its factorization.

42018193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6002606.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 42018193 is about 6482.1441668633. The cubic root of 42018193 is about 347.6528472060.

The spelling of 42018193 in words is "forty-two million, eighteen thousand, one hundred ninety-three".