42260881 has 4 divisors (see below), whose sum is σ = 45511732. Its totient is φ = 39010032.

The previous prime is 42260879. The next prime is 42260887. The reversal of 42260881 is 18806224.

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 2772225 + 39488656 = 1665^2 + 6284^2 .

It is a cyclic number.

It is not a de Polignac number, because 42260881 - 2¹ = 42260879 is a prime.

It is a super-2 number, since 2×42260881² = 3571964125792322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42260887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1625406 + ... + 1625431.

It is an arithmetic number, because the mean of its divisors is an integer number (11377933).

Almost surely, 2^42260881 is an apocalyptic number.

It is an amenable number.

42260881 is a deficient number, since it is larger than the sum of its proper divisors (3250851).

42260881 is a wasteful number, since it uses less digits than its factorization.

42260881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3250850.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 42260881 is about 6500.8369461170. The cubic root of 42260881 is about 348.3208852695.

The spelling of 42260881 in words is "forty-two million, two hundred sixty thousand, eight hundred eighty-one".