2100249 has 28 divisors (see below), whose sum is σ = 3270256. Its totient is φ = 1347192.

The previous prime is 2100247. The next prime is 2100253. The reversal of 2100249 is 9420012.

It is not a de Polignac number, because 2100249 - 2¹ = 2100247 is a prime.

It is a super-2 number, since 2×2100249² = 8822091724002, which contains 22 as substring.

It is a Duffinian number.

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

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 31314 + ... + 31380.

2^2100249 is an apocalyptic number.

It is an amenable number.

2100249 is a deficient number, since it is larger than the sum of its proper divisors (1170007).

2100249 is an frugal number, since it uses more digits than its factorization.

2100249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2100249 is about 1449.2235852345. The cubic root of 2100249 is about 128.0629776354.

The spelling of 2100249 in words is "two million, one hundred thousand, two hundred forty-nine".