2172664342 has 16 divisors (see below), whose sum is σ = 3309304320. Its totient is φ = 1069579368.

The previous prime is 2172664261. The next prime is 2172664343. The reversal of 2172664342 is 2434662712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172664343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 454159 + ... + 458917.

It is an arithmetic number, because the mean of its divisors is an integer number (206831520).

Almost surely, 2^2172664342 is an apocalyptic number.

2172664342 is a deficient number, since it is larger than the sum of its proper divisors (1136639978).

2172664342 is a wasteful number, since it uses less digits than its factorization.

2172664342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8235.

The product of its digits is 96768, while the sum is 37.

The square root of 2172664342 is about 46611.8476570067. The cubic root of 2172664342 is about 1295.1822350044.

It can be divided in two parts, 21726 and 64342, that added together give a palindrome (86068).

The spelling of 2172664342 in words is "two billion, one hundred seventy-two million, six hundred sixty-four thousand, three hundred forty-two".