2123678 has 8 divisors (see below), whose sum is σ = 3226080. Its totient is φ = 1048320.

The previous prime is 2123669. The next prime is 2123683. The reversal of 2123678 is 8763212.

It is a happy number.

2123678 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 2123678.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 6563 + ... + 6878.

It is an arithmetic number, because the mean of its divisors is an integer number (403260).

2^2123678 is an apocalyptic number.

2123678 is a deficient number, since it is larger than the sum of its proper divisors (1102402).

2123678 is a wasteful number, since it uses less digits than its factorization.

2123678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13522.

The product of its digits is 4032, while the sum is 29.

The square root of 2123678 is about 1457.2844609067. The cubic root of 2123678 is about 128.5374133414.

The spelling of 2123678 in words is "two million, one hundred twenty-three thousand, six hundred seventy-eight".