42744259 has 4 divisors (see below), whose sum is σ = 42758280. Its totient is φ = 42730240.

The previous prime is 42744227. The next prime is 42744271. The reversal of 42744259 is 95244724.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42744259 - 2⁵ = 42744227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42744209) 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, 289 + ... + 9250.

It is an arithmetic number, because the mean of its divisors is an integer number (10689570).

Almost surely, 2^42744259 is an apocalyptic number.

42744259 is a deficient number, since it is larger than the sum of its proper divisors (14021).

42744259 is an equidigital number, since it uses as much as digits as its factorization.

42744259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14020.

The product of its digits is 80640, while the sum is 37.

The square root of 42744259 is about 6537.9093753279. The cubic root of 42744259 is about 349.6438799527.

The spelling of 42744259 in words is "forty-two million, seven hundred forty-four thousand, two hundred fifty-nine".