2100434 has 12 divisors (see below), whose sum is σ = 3665214. Its totient is φ = 900144.

The previous prime is 2100409. The next prime is 2100451. The reversal of 2100434 is 4340012.

It can be written as a sum of positive squares in only one way, i.e., 2059225 + 41209 = 1435^2 + 203^2 .

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10619 + ... + 10814.

2^2100434 is an apocalyptic number.

2100434 is a deficient number, since it is larger than the sum of its proper divisors (1564780).

2100434 is a wasteful number, since it uses less digits than its factorization.

2100434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21449 (or 21442 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 2100434 is about 1449.2874111093. The cubic root of 2100434 is about 128.0667376587.

Adding to 2100434 its reverse (4340012), we get a palindrome (6440446).

The spelling of 2100434 in words is "two million, one hundred thousand, four hundred thirty-four".