2129403 has 16 divisors (see below), whose sum is σ = 3079296. Its totient is φ = 1303680.

The previous prime is 2129401. The next prime is 2129419. The reversal of 2129403 is 3049212.

It is not a de Polignac number, because 2129403 - 2¹ = 2129401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2129403.

It is not an unprimeable number, because it can be changed into a prime (2129401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1708 + ... + 2678.

It is an arithmetic number, because the mean of its divisors is an integer number (192456).

2^2129403 is an apocalyptic number.

2129403 is a deficient number, since it is larger than the sum of its proper divisors (949893).

2129403 is a wasteful number, since it uses less digits than its factorization.

2129403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 2129403 is about 1459.2474087693. The cubic root of 2129403 is about 128.6528132000.

The spelling of 2129403 in words is "two million, one hundred twenty-nine thousand, four hundred three".