42881117 has 4 divisors (see below), whose sum is σ = 43096800. Its totient is φ = 42665436.

The previous prime is 42881101. The next prime is 42881159. The reversal of 42881117 is 71118824.

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 a cyclic number.

It is not a de Polignac number, because 42881117 - 2⁴ = 42881101 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 (42883117) 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, 107543 + ... + 107940.

It is an arithmetic number, because the mean of its divisors is an integer number (10774200).

Almost surely, 2^42881117 is an apocalyptic number.

It is an amenable number.

42881117 is a deficient number, since it is larger than the sum of its proper divisors (215683).

42881117 is a wasteful number, since it uses less digits than its factorization.

42881117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215682.

The product of its digits is 3584, while the sum is 32.

The square root of 42881117 is about 6548.3675064859. The cubic root of 42881117 is about 350.0166441064.

The spelling of 42881117 in words is "forty-two million, eight hundred eighty-one thousand, one hundred seventeen".