1422406 has 8 divisors (see below), whose sum is σ = 2146464. Its totient is φ = 706920.

The previous prime is 1422367. The next prime is 1422409. The reversal of 1422406 is 6042241.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1710 + ... + 2401.

It is an arithmetic number, because the mean of its divisors is an integer number (268308).

2^1422406 is an apocalyptic number.

1422406 is a deficient number, since it is larger than the sum of its proper divisors (724058).

1422406 is a wasteful number, since it uses less digits than its factorization.

1422406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4286.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1422406 is about 1192.6466366867. The cubic root of 1422406 is about 112.4625323789.

Adding to 1422406 its reverse (6042241), we get a palindrome (7464647).

The spelling of 1422406 in words is "one million, four hundred twenty-two thousand, four hundred six".