42911697 has 4 divisors (see below), whose sum is σ = 57215600. Its totient is φ = 28607796.

The previous prime is 42911683. The next prime is 42911717. The reversal of 42911697 is 79611924.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42911697 - 2⁴ = 42911681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42911647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7151947 + ... + 7151952.

It is an arithmetic number, because the mean of its divisors is an integer number (14303900).

Almost surely, 2^42911697 is an apocalyptic number.

It is an amenable number.

42911697 is a deficient number, since it is larger than the sum of its proper divisors (14303903).

42911697 is a wasteful number, since it uses less digits than its factorization.

42911697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14303902.

The product of its digits is 27216, while the sum is 39.

The square root of 42911697 is about 6550.7020234476. The cubic root of 42911697 is about 350.0998273068.

It can be divided in two parts, 4291 and 1697, that multiplied together give a palindrome (7281827).

The spelling of 42911697 in words is "forty-two million, nine hundred eleven thousand, six hundred ninety-seven".