2124378 has 24 divisors (see below), whose sum is σ = 4650048. Its totient is φ = 700872.

The previous prime is 2124377. The next prime is 2124401. The reversal of 2124378 is 8734212.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2124377) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1375 + ... + 2477.

It is an arithmetic number, because the mean of its divisors is an integer number (193752).

2^2124378 is an apocalyptic number.

2124378 is an abundant number, since it is smaller than the sum of its proper divisors (2525670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2124378 is a wasteful number, since it uses less digits than its factorization.

2124378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218 (or 1215 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 2124378 is about 1457.5246138573. The cubic root of 2124378 is about 128.5515344880.

It can be divided in two parts, 21243 and 78, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 2124378 in words is "two million, one hundred twenty-four thousand, three hundred seventy-eight".