2124155 has 12 divisors (see below), whose sum is σ = 2802576. Its totient is φ = 1544400.

The previous prime is 2124149. The next prime is 2124173. The reversal of 2124155 is 5514212.

2124155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2124155 - 2⁴ = 2124139 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1151 + ... + 2360.

It is an arithmetic number, because the mean of its divisors is an integer number (233548).

2^2124155 is an apocalyptic number.

2124155 is a deficient number, since it is larger than the sum of its proper divisors (678421).

2124155 is a wasteful number, since it uses less digits than its factorization.

2124155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3538 (or 3527 counting only the distinct ones).

The product of its digits is 400, while the sum is 20.

The square root of 2124155 is about 1457.4481122839. The cubic root of 2124155 is about 128.5470362309.

Adding to 2124155 its reverse (5514212), we get a palindrome (7638367).

The spelling of 2124155 in words is "two million, one hundred twenty-four thousand, one hundred fifty-five".