2100087 has 20 divisors (see below), whose sum is σ = 3423816. Its totient is φ = 1272240.

The previous prime is 2100079. The next prime is 2100097. The reversal of 2100087 is 7800012.

It is not a de Polignac number, because 2100087 - 2³ = 2100079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100097) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 288 + ... + 2069.

2^2100087 is an apocalyptic number.

2100087 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2100087 is a deficient number, since it is larger than the sum of its proper divisors (1323729).

2100087 is a wasteful number, since it uses less digits than its factorization.

2100087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380 (or 2371 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 2100087 is about 1449.1676921599. The cubic root of 2100087 is about 128.0596848932.

Adding to 2100087 its reverse (7800012), we get a palindrome (9900099).

The spelling of 2100087 in words is "two million, one hundred thousand, eighty-seven".