2171536142 has 16 divisors (see below), whose sum is σ = 3374957232. Its totient is φ = 1047070080.

The previous prime is 2171536111. The next prime is 2171536151. The reversal of 2171536142 is 2416351712.

It is a junction number, because it is equal to n+sod(n) for n = 2171536099 and 2171536108.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 121484 + ... + 138207.

It is an arithmetic number, because the mean of its divisors is an integer number (210934827).

Almost surely, 2^2171536142 is an apocalyptic number.

2171536142 is a deficient number, since it is larger than the sum of its proper divisors (1203421090).

2171536142 is a wasteful number, since it uses less digits than its factorization.

2171536142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259843.

The product of its digits is 10080, while the sum is 32.

The square root of 2171536142 is about 46599.7440121724. The cubic root of 2171536142 is about 1294.9580129796.

Adding to 2171536142 its reverse (2416351712), we get a palindrome (4587887854).

The spelling of 2171536142 in words is "two billion, one hundred seventy-one million, five hundred thirty-six thousand, one hundred forty-two".