42854389 has 4 divisors (see below), whose sum is σ = 43899660. Its totient is φ = 41809120.

The previous prime is 42854381. The next prime is 42854411. The reversal of 42854389 is 98345824.

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 12659364 + 30195025 = 3558^2 + 5495^2 .

It is a cyclic number.

It is not a de Polignac number, because 42854389 - 2³ = 42854381 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 (42854381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522574 + ... + 522655.

It is an arithmetic number, because the mean of its divisors is an integer number (10974915).

Almost surely, 2^42854389 is an apocalyptic number.

It is an amenable number.

42854389 is a deficient number, since it is larger than the sum of its proper divisors (1045271).

42854389 is a wasteful number, since it uses less digits than its factorization.

42854389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045270.

The product of its digits is 276480, while the sum is 43.

The square root of 42854389 is about 6546.3263743874. The cubic root of 42854389 is about 349.9439066568.

The spelling of 42854389 in words is "forty-two million, eight hundred fifty-four thousand, three hundred eighty-nine".