2161242106 has 8 divisors (see below), whose sum is σ = 3255428160. Its totient is φ = 1076099388.

The previous prime is 2161242103. The next prime is 2161242119. The reversal of 2161242106 is 6012421612.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2161242103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2260236 + ... + 2261191.

It is an arithmetic number, because the mean of its divisors is an integer number (406928520).

Almost surely, 2^2161242106 is an apocalyptic number.

2161242106 is a deficient number, since it is larger than the sum of its proper divisors (1094186054).

2161242106 is a wasteful number, since it uses less digits than its factorization.

2161242106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4521668.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 2161242106 is about 46489.1611668785. The cubic root of 2161242106 is about 1292.9085476736.

Adding to 2161242106 its reverse (6012421612), we get a palindrome (8173663718).

The spelling of 2161242106 in words is "two billion, one hundred sixty-one million, two hundred forty-two thousand, one hundred six".