4278422 has 4 divisors (see below), whose sum is σ = 6417636. Its totient is φ = 2139210.

The previous prime is 4278413. The next prime is 4278431. The reversal of 4278422 is 2248724.

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

It is an interprime number because it is at equal distance from previous prime (4278413) and next prime (4278431).

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, 1069604 + ... + 1069607.

It is an arithmetic number, because the mean of its divisors is an integer number (1604409).

Almost surely, 2^4278422 is an apocalyptic number.

4278422 is a deficient number, since it is larger than the sum of its proper divisors (2139214).

4278422 is a wasteful number, since it uses less digits than its factorization.

4278422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139213.

The product of its digits is 7168, while the sum is 29.

The square root of 4278422 is about 2068.4346738536. The cubic root of 4278422 is about 162.3408714427.

The spelling of 4278422 in words is "four million, two hundred seventy-eight thousand, four hundred twenty-two".