42695891 has 16 divisors (see below), whose sum is σ = 53067456. Its totient is φ = 33509376.

The previous prime is 42695839. The next prime is 42695893. The reversal of 42695891 is 19859624.

It is a cyclic number.

It is not a de Polignac number, because 42695891 - 2⁶ = 42695827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42695893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446 + ... + 9251.

It is an arithmetic number, because the mean of its divisors is an integer number (3316716).

Almost surely, 2^42695891 is an apocalyptic number.

42695891 is a deficient number, since it is larger than the sum of its proper divisors (10371565).

42695891 is a wasteful number, since it uses less digits than its factorization.

42695891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9758.

The product of its digits is 155520, while the sum is 44.

The square root of 42695891 is about 6534.2092865166. The cubic root of 42695891 is about 349.5119483322.

The spelling of 42695891 in words is "forty-two million, six hundred ninety-five thousand, eight hundred ninety-one".