42641191 has 4 divisors (see below), whose sum is σ = 42671992. Its totient is φ = 42610392.

The previous prime is 42641171. The next prime is 42641197. The reversal of 42641191 is 19114624.

42641191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42641191 - 2⁷ = 42641063 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 (42641197) 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 3 ways as a sum of consecutive naturals, for example, 13221 + ... + 16126.

It is an arithmetic number, because the mean of its divisors is an integer number (10667998).

Almost surely, 2^42641191 is an apocalyptic number.

42641191 is a deficient number, since it is larger than the sum of its proper divisors (30801).

42641191 is a wasteful number, since it uses less digits than its factorization.

42641191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30800.

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

The square root of 42641191 is about 6530.0222817384. The cubic root of 42641191 is about 349.3626250333.

The spelling of 42641191 in words is "forty-two million, six hundred forty-one thousand, one hundred ninety-one".