73420171 has 4 divisors (see below), whose sum is σ = 80094744. Its totient is φ = 66745600.

The previous prime is 73420169. The next prime is 73420181. The reversal of 73420171 is 17102437.

It is a happy number.

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 73420171 - 2¹ = 73420169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73420181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3337270 + ... + 3337291.

It is an arithmetic number, because the mean of its divisors is an integer number (20023686).

Almost surely, 2^73420171 is an apocalyptic number.

73420171 is a deficient number, since it is larger than the sum of its proper divisors (6674573).

73420171 is a wasteful number, since it uses less digits than its factorization.

73420171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6674572.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 73420171 is about 8568.5571130734. The cubic root of 73420171 is about 418.7342295687.

The spelling of 73420171 in words is "seventy-three million, four hundred twenty thousand, one hundred seventy-one".