42891369 has 16 divisors (see below), whose sum is σ = 58430400. Its totient is φ = 27979776.

The previous prime is 42891347. The next prime is 42891413. The reversal of 42891369 is 96319824.

42891369 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 42891369 - 2⁹ = 42890857 is a prime.

It is a super-2 number, since 2×42891369² = 3679339069388322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42891369.

It is not an unprimeable number, because it can be changed into a prime (42891269) 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 15 ways as a sum of consecutive naturals, for example, 29737 + ... + 31145.

It is an arithmetic number, because the mean of its divisors is an integer number (3651900).

Almost surely, 2^42891369 is an apocalyptic number.

It is an amenable number.

42891369 is a deficient number, since it is larger than the sum of its proper divisors (15539031).

42891369 is a wasteful number, since it uses less digits than its factorization.

42891369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624.

The product of its digits is 93312, while the sum is 42.

The square root of 42891369 is about 6549.1502502233. The cubic root of 42891369 is about 350.0445358294.

The spelling of 42891369 in words is "forty-two million, eight hundred ninety-one thousand, three hundred sixty-nine".