2102123042 has 8 divisors (see below), whose sum is σ = 3290279616. Its totient is φ = 1005363172.

The previous prime is 2102123041. The next prime is 2102123053. The reversal of 2102123042 is 2403212012.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2102123042.

It is not an unprimeable number, because it can be changed into a prime (2102123041) 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, 22849118 + ... + 22849209.

It is an arithmetic number, because the mean of its divisors is an integer number (411284952).

Almost surely, 2^2102123042 is an apocalyptic number.

2102123042 is a deficient number, since it is larger than the sum of its proper divisors (1188156574).

2102123042 is a wasteful number, since it uses less digits than its factorization.

2102123042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45698352.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2102123042 is about 45848.9153852084. The cubic root of 2102123042 is about 1281.0105630321.

Adding to 2102123042 its reverse (2403212012), we get a palindrome (4505335054).

The spelling of 2102123042 in words is "two billion, one hundred two million, one hundred twenty-three thousand, forty-two".