42971177 has 4 divisors (see below), whose sum is σ = 44357376. Its totient is φ = 41584980.

The previous prime is 42971161. The next prime is 42971183. The reversal of 42971177 is 77117924.

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 a cyclic number.

It is not a de Polignac number, because 42971177 - 2⁴ = 42971161 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 42971177.

It is not an unprimeable number, because it can be changed into a prime (42971077) 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, 693053 + ... + 693114.

It is an arithmetic number, because the mean of its divisors is an integer number (11089344).

Almost surely, 2^42971177 is an apocalyptic number.

It is an amenable number.

42971177 is a deficient number, since it is larger than the sum of its proper divisors (1386199).

42971177 is a wasteful number, since it uses less digits than its factorization.

42971177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386198.

The product of its digits is 24696, while the sum is 38.

The square root of 42971177 is about 6555.2404227458. The cubic root of 42971177 is about 350.2615106800.

The spelling of 42971177 in words is "forty-two million, nine hundred seventy-one thousand, one hundred seventy-seven".