72042010171 has 4 divisors (see below), whose sum is σ = 72054333000. Its totient is φ = 72029687344.

The previous prime is 72042010133. The next prime is 72042010213. The reversal of 72042010171 is 17101024027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17101024027 = 41 ⋅417098147.

It is a cyclic number.

It is not a de Polignac number, because 72042010171 - 2²¹ = 72039913019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72042010771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6152641 + ... + 6164338.

It is an arithmetic number, because the mean of its divisors is an integer number (18013583250).

Almost surely, 2^72042010171 is an apocalyptic number.

72042010171 is a deficient number, since it is larger than the sum of its proper divisors (12322829).

72042010171 is a wasteful number, since it uses less digits than its factorization.

72042010171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12322828.

The product of its (nonzero) digits is 784, while the sum is 25.

Adding to 72042010171 its reverse (17101024027), we get a palindrome (89143034198).

The spelling of 72042010171 in words is "seventy-two billion, forty-two million, ten thousand, one hundred seventy-one".