42969865 has 16 divisors (see below), whose sum is σ = 53986176. Its totient is φ = 32771200.

The previous prime is 42969853. The next prime is 42969881. The reversal of 42969865 is 56896924.

42969865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42969865 - 2⁵ = 42969833 is a prime.

It is a Duffinian number.

Its product of digits (933120) is a multiple of the sum of its prime divisors (1280).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 56085 + ... + 56845.

It is an arithmetic number, because the mean of its divisors is an integer number (3374136).

Almost surely, 2^42969865 is an apocalyptic number.

It is an amenable number.

42969865 is a deficient number, since it is larger than the sum of its proper divisors (11016311).

42969865 is a wasteful number, since it uses less digits than its factorization.

42969865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280.

The product of its digits is 933120, while the sum is 49.

The square root of 42969865 is about 6555.1403493747. The cubic root of 42969865 is about 350.2579459046.

It can be divided in two parts, 42969 and 865, that added together give a palindrome (43834).

The spelling of 42969865 in words is "forty-two million, nine hundred sixty-nine thousand, eight hundred sixty-five".