42881873 has 4 divisors (see below), whose sum is σ = 43306548. Its totient is φ = 42457200.

The previous prime is 42881819. The next prime is 42881899. The reversal of 42881873 is 37818824.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30547729 + 12334144 = 5527^2 + 3512^2 .

It is a cyclic number.

It is not a de Polignac number, because 42881873 - 2¹² = 42877777 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42881873.

It is not an unprimeable number, because it can be changed into a prime (42883873) 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, 212186 + ... + 212387.

It is an arithmetic number, because the mean of its divisors is an integer number (10826637).

Almost surely, 2^42881873 is an apocalyptic number.

It is an amenable number.

42881873 is a deficient number, since it is larger than the sum of its proper divisors (424675).

42881873 is a wasteful number, since it uses less digits than its factorization.

42881873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424674.

The product of its digits is 86016, while the sum is 41.

The square root of 42881873 is about 6548.4252305421. The cubic root of 42881873 is about 350.0187010416.

The spelling of 42881873 in words is "forty-two million, eight hundred eighty-one thousand, eight hundred seventy-three".