2140378 has 4 divisors (see below), whose sum is σ = 3210570. Its totient is φ = 1070188.

The previous prime is 2140367. The next prime is 2140387. The reversal of 2140378 is 8730412.

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

It can be written as a sum of positive squares in only one way, i.e., 2140369 + 9 = 1463^2 + 3^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535093 + ... + 535096.

2^2140378 is an apocalyptic number.

2140378 is a deficient number, since it is larger than the sum of its proper divisors (1070192).

2140378 is a wasteful number, since it uses less digits than its factorization.

2140378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070191.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 2140378 is about 1463.0030758683. The cubic root of 2140378 is about 128.8734612375.

The spelling of 2140378 in words is "two million, one hundred forty thousand, three hundred seventy-eight".