42164471 has 4 divisors (see below), whose sum is σ = 44644752. Its totient is φ = 39684192.

The previous prime is 42164431. The next prime is 42164483. The reversal of 42164471 is 17446124.

It is a happy number.

42164471 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 a cyclic number.

It is not a de Polignac number, because 42164471 - 2⁶ = 42164407 is a prime.

It is a super-3 number, since 3×42164471³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42164411) 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, 1240115 + ... + 1240148.

It is an arithmetic number, because the mean of its divisors is an integer number (11161188).

Almost surely, 2^42164471 is an apocalyptic number.

42164471 is a deficient number, since it is larger than the sum of its proper divisors (2480281).

42164471 is a wasteful number, since it uses less digits than its factorization.

42164471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2480280.

The product of its digits is 5376, while the sum is 29.

The square root of 42164471 is about 6493.4175131436. The cubic root of 42164471 is about 348.0558080885.

The spelling of 42164471 in words is "forty-two million, one hundred sixty-four thousand, four hundred seventy-one".