1422340 has 36 divisors (see below), whose sum is σ = 3168396. Its totient is φ = 536256.

The previous prime is 1422293. The next prime is 1422367. The reversal of 1422340 is 432241.

It can be written as a sum of positive squares in 2 ways, for example, as 1052676 + 369664 = 1026^2 + 608^2 .

It is a d-powerful number, because it can be written as 1 + 4⁸ + 2³ + 2¹⁷ + 3¹¹ + 4¹⁰ + 0 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7122 + ... + 7318.

It is an arithmetic number, because the mean of its divisors is an integer number (88011).

2^1422340 is an apocalyptic number.

1422340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1422340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1584198).

1422340 is an abundant number, since it is smaller than the sum of its proper divisors (1746056).

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

1422340 is a wasteful number, since it uses less digits than its factorization.

1422340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1422340 is about 1192.6189668121. The cubic root of 1422340 is about 112.4607929220.

Adding to 1422340 its reverse (432241), we get a palindrome (1854581).

Subtracting from 1422340 its reverse (432241), we obtain a palindrome (990099).

The spelling of 1422340 in words is "one million, four hundred twenty-two thousand, three hundred forty".