2178142 has 8 divisors (see below), whose sum is σ = 3459456. Its totient is φ = 1024992.

The previous prime is 2178139. The next prime is 2178149. The reversal of 2178142 is 2418712.

It is a happy number.

2178142 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2178149) by changing a digit.

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, 31998 + ... + 32065.

It is an arithmetic number, because the mean of its divisors is an integer number (432432).

2^2178142 is an apocalyptic number.

2178142 is a deficient number, since it is larger than the sum of its proper divisors (1281314).

2178142 is a wasteful number, since it uses less digits than its factorization.

2178142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64082.

The product of its digits is 896, while the sum is 25.

The square root of 2178142 is about 1475.8529737071. The cubic root of 2178142 is about 129.6269780118.

The spelling of 2178142 in words is "two million, one hundred seventy-eight thousand, one hundred forty-two".