2129156 has 12 divisors (see below), whose sum is σ = 3888192. Its totient is φ = 1018248.

The previous prime is 2129123. The next prime is 2129161. The reversal of 2129156 is 6519212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11480 + ... + 11663.

It is an arithmetic number, because the mean of its divisors is an integer number (324016).

2^2129156 is an apocalyptic number.

It is an amenable number.

2129156 is a deficient number, since it is larger than the sum of its proper divisors (1759036).

2129156 is a wasteful number, since it uses less digits than its factorization.

2129156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23170 (or 23168 counting only the distinct ones).

The product of its digits is 1080, while the sum is 26.

The square root of 2129156 is about 1459.1627736480. The cubic root of 2129156 is about 128.6478386486.

The spelling of 2129156 in words is "two million, one hundred twenty-nine thousand, one hundred fifty-six".