2100242 has 8 divisors (see below), whose sum is σ = 3217536. Its totient is φ = 1027732.

The previous prime is 2100239. The next prime is 2100247. The reversal of 2100242 is 2420012.

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

It is a super-2 number, since 2×2100242² = 8822032917128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2100247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11078 + ... + 11265.

It is an arithmetic number, because the mean of its divisors is an integer number (402192).

2^2100242 is an apocalyptic number.

2100242 is a deficient number, since it is larger than the sum of its proper divisors (1117294).

2100242 is a wasteful number, since it uses less digits than its factorization.

2100242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22392.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 2100242 is about 1449.2211701462. The cubic root of 2100242 is about 128.0628353599.

Adding to 2100242 its reverse (2420012), we get a palindrome (4520254).

The spelling of 2100242 in words is "two million, one hundred thousand, two hundred forty-two".