42944691 has 4 divisors (see below), whose sum is σ = 57259592. Its totient is φ = 28629792.

The previous prime is 42944689. The next prime is 42944701. The reversal of 42944691 is 19644924.

42944691 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 is not a de Polignac number, because 42944691 - 2¹ = 42944689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42944491) 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, 7157446 + ... + 7157451.

It is an arithmetic number, because the mean of its divisors is an integer number (14314898).

Almost surely, 2^42944691 is an apocalyptic number.

42944691 is a deficient number, since it is larger than the sum of its proper divisors (14314901).

42944691 is a wasteful number, since it uses less digits than its factorization.

42944691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14314900.

The product of its digits is 62208, while the sum is 39.

The square root of 42944691 is about 6553.2198955933. The cubic root of 42944691 is about 350.1895327195.

The spelling of 42944691 in words is "forty-two million, nine hundred forty-four thousand, six hundred ninety-one".