42681269 has 4 divisors (see below), whose sum is σ = 42699744. Its totient is φ = 42662796.

The previous prime is 42681263. The next prime is 42681283. The reversal of 42681269 is 96218624.

42681269 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42681269 - 2⁴ = 42681253 is a prime.

It is a super-2 number, since 2×42681269² = 3643381446900722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42681263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5177 + ... + 10590.

It is an arithmetic number, because the mean of its divisors is an integer number (10674936).

Almost surely, 2^42681269 is an apocalyptic number.

It is an amenable number.

42681269 is a deficient number, since it is larger than the sum of its proper divisors (18475).

42681269 is a wasteful number, since it uses less digits than its factorization.

42681269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18474.

The product of its digits is 41472, while the sum is 38.

The square root of 42681269 is about 6533.0903101059. The cubic root of 42681269 is about 349.4720448263.

The spelling of 42681269 in words is "forty-two million, six hundred eighty-one thousand, two hundred sixty-nine".