42864469 has 4 divisors (see below), whose sum is σ = 43152300. Its totient is φ = 42576640.

The previous prime is 42864467. The next prime is 42864473. The reversal of 42864469 is 96446824.

42864469 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.

It can be written as a sum of positive squares in 2 ways, for example, as 6563844 + 36300625 = 2562^2 + 6025^2 .

It is a cyclic number.

It is not a de Polignac number, because 42864469 - 2¹ = 42864467 is a prime.

It is a super-2 number, since 2×42864469² = 3674725405303922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42864467) 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, 143692 + ... + 143989.

It is an arithmetic number, because the mean of its divisors is an integer number (10788075).

Almost surely, 2^42864469 is an apocalyptic number.

It is an amenable number.

42864469 is a deficient number, since it is larger than the sum of its proper divisors (287831).

42864469 is a wasteful number, since it uses less digits than its factorization.

42864469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287830.

The product of its digits is 331776, while the sum is 43.

The square root of 42864469 is about 6547.0962265725. The cubic root of 42864469 is about 349.9713418712.

The spelling of 42864469 in words is "forty-two million, eight hundred sixty-four thousand, four hundred sixty-nine".