1405422 has 12 divisors (see below), whose sum is σ = 3045120. Its totient is φ = 468468.

The previous prime is 1405421. The next prime is 1405451. The reversal of 1405422 is 2245041.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 78079 = 1405422 / (1 + 4 + 0 + 5 + 4 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 1405395 and 1405404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39022 + ... + 39057.

It is an arithmetic number, because the mean of its divisors is an integer number (253760).

2^1405422 is an apocalyptic number.

1405422 is an abundant number, since it is smaller than the sum of its proper divisors (1639698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1405422 is a wasteful number, since it uses less digits than its factorization.

1405422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78087 (or 78084 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 1405422 is about 1185.5049557045. The cubic root of 1405422 is about 112.0131255876.

The spelling of 1405422 in words is "one million, four hundred five thousand, four hundred twenty-two".