4378342 has 4 divisors (see below), whose sum is σ = 6567516. Its totient is φ = 2189170.

The previous prime is 4378327. The next prime is 4378351. The reversal of 4378342 is 2438734.

It is a happy number.

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

It is a Smith number, since the sum of its digits (31) 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 polite number, since it can be written as a sum of consecutive naturals, namely, 1094584 + ... + 1094587.

It is an arithmetic number, because the mean of its divisors is an integer number (1641879).

Almost surely, 2^4378342 is an apocalyptic number.

4378342 is a deficient number, since it is larger than the sum of its proper divisors (2189174).

4378342 is a wasteful number, since it uses less digits than its factorization.

4378342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189173.

The product of its digits is 16128, while the sum is 31.

The square root of 4378342 is about 2092.4488046306. The cubic root of 4378342 is about 163.5949502569.

The spelling of 4378342 in words is "four million, three hundred seventy-eight thousand, three hundred forty-two".