2140078 has 4 divisors (see below), whose sum is σ = 3210120. Its totient is φ = 1070038.

The previous prime is 2140069. The next prime is 2140091. The reversal of 2140078 is 8700412.

2140078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 as a sum of consecutive naturals, namely, 535018 + ... + 535021.

It is an arithmetic number, because the mean of its divisors is an integer number (802530).

2^2140078 is an apocalyptic number.

2140078 is a deficient number, since it is larger than the sum of its proper divisors (1070042).

2140078 is a wasteful number, since it uses less digits than its factorization.

2140078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070041.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 2140078 is about 1462.9005434410. The cubic root of 2140078 is about 128.8674398953.

The spelling of 2140078 in words is "two million, one hundred forty thousand, seventy-eight".