2100124242 has 24 divisors (see below), whose sum is σ = 4551668316. Its totient is φ = 699826176.

The previous prime is 2100124237. The next prime is 2100124267. The reversal of 2100124242 is 2424210012.

It can be written as a sum of positive squares in 2 ways, for example, as 1646817561 + 453306681 = 40581^2 + 21291^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 48978 + ... + 81234.

Almost surely, 2^2100124242 is an apocalyptic number.

2100124242 is an abundant number, since it is smaller than the sum of its proper divisors (2451544074).

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

2100124242 is a wasteful number, since it uses less digits than its factorization.

2100124242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35882 (or 35879 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 2100124242 is about 45827.1125208648. The cubic root of 2100124242 is about 1280.6044187302.

Adding to 2100124242 its reverse (2424210012), we get a palindrome (4524334254).

The spelling of 2100124242 in words is "two billion, one hundred million, one hundred twenty-four thousand, two hundred forty-two".