42869191 has 4 divisors (see below), whose sum is σ = 43048800. Its totient is φ = 42689584.

The previous prime is 42869143. The next prime is 42869201. The reversal of 42869191 is 19196824.

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 42869191 - 2¹³ = 42860999 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 (42869891) 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, 89446 + ... + 89923.

It is an arithmetic number, because the mean of its divisors is an integer number (10762200).

Almost surely, 2^42869191 is an apocalyptic number.

42869191 is a deficient number, since it is larger than the sum of its proper divisors (179609).

42869191 is a wasteful number, since it uses less digits than its factorization.

42869191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179608.

The product of its digits is 31104, while the sum is 40.

The square root of 42869191 is about 6547.4568345274. The cubic root of 42869191 is about 349.9841924834.

The spelling of 42869191 in words is "forty-two million, eight hundred sixty-nine thousand, one hundred ninety-one".