1422018 has 48 divisors (see below), whose sum is σ = 3407040. Its totient is φ = 425952.

The previous prime is 1422013. The next prime is 1422023. The reversal of 1422018 is 8102241.

It is an interprime number because it is at equal distance from previous prime (1422013) and next prime (1422023).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13755 + ... + 13857.

It is an arithmetic number, because the mean of its divisors is an integer number (70980).

2^1422018 is an apocalyptic number.

1422018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1422018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1703520).

1422018 is an abundant number, since it is smaller than the sum of its proper divisors (1985022).

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

1422018 is a wasteful number, since it uses less digits than its factorization.

1422018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1422018 is about 1192.4839621563. The cubic root of 1422018 is about 112.4523057088.

Adding to 1422018 its reverse (8102241), we get a palindrome (9524259).

The spelling of 1422018 in words is "one million, four hundred twenty-two thousand, eighteen".