1422478 has 8 divisors (see below), whose sum is σ = 2163168. Its totient is φ = 701424.

The previous prime is 1422469. The next prime is 1422493. The reversal of 1422478 is 8742241.

It is a sphenic number, since it is the product of 3 distinct primes.

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 in 3 ways as a sum of consecutive naturals, for example, 4726 + ... + 5017.

It is an arithmetic number, because the mean of its divisors is an integer number (270396).

2^1422478 is an apocalyptic number.

1422478 is a deficient number, since it is larger than the sum of its proper divisors (740690).

1422478 is an equidigital number, since it uses as much as digits as its factorization.

1422478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9818.

The product of its digits is 3584, while the sum is 28.

The square root of 1422478 is about 1192.6768212722. The cubic root of 1422478 is about 112.4644299069.

The spelling of 1422478 in words is "one million, four hundred twenty-two thousand, four hundred seventy-eight".