2142123306 has 8 divisors (see below), whose sum is σ = 4284246624. Its totient is φ = 714041100.

The previous prime is 2142123287. The next prime is 2142123307. The reversal of 2142123306 is 6033212412.

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

2142123306 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2142123307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178510270 + ... + 178510281.

It is an arithmetic number, because the mean of its divisors is an integer number (535530828).

Almost surely, 2^2142123306 is an apocalyptic number.

2142123306 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2142123306 is a wasteful number, since it uses less digits than its factorization.

2142123306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357020556.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 2142123306 is about 46283.0779659262. The cubic root of 2142123306 is about 1289.0848036607.

Adding to 2142123306 its reverse (6033212412), we get a palindrome (8175335718).

The spelling of 2142123306 in words is "two billion, one hundred forty-two million, one hundred twenty-three thousand, three hundred six".