42081193 has 8 divisors (see below), whose sum is σ = 52464960. Its totient is φ = 32790480.

The previous prime is 42081163. The next prime is 42081197. The reversal of 42081193 is 39118024.

It is a happy number.

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 42081193 - 2²¹ = 39984041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42081197) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 273178 + ... + 273331.

It is an arithmetic number, because the mean of its divisors is an integer number (6558120).

Almost surely, 2^42081193 is an apocalyptic number.

It is an amenable number.

42081193 is a deficient number, since it is larger than the sum of its proper divisors (10383767).

42081193 is a wasteful number, since it uses less digits than its factorization.

42081193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546527.

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

The square root of 42081193 is about 6487.0018498533. The cubic root of 42081193 is about 347.8265116007.

The spelling of 42081193 in words is "forty-two million, eighty-one thousand, one hundred ninety-three".