1121418 has 32 divisors (see below), whose sum is σ = 2625600. Its totient is φ = 353808.

The previous prime is 1121389. The next prime is 1121423. The reversal of 1121418 is 8141211.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1121418.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 480 + ... + 1572.

It is an arithmetic number, because the mean of its divisors is an integer number (82050).

2^1121418 is an apocalyptic number.

1121418 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 1121418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1312800).

1121418 is an abundant number, since it is smaller than the sum of its proper divisors (1504182).

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

1121418 is a wasteful number, since it uses less digits than its factorization.

1121418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123 (or 1117 counting only the distinct ones).

The product of its digits is 64, while the sum is 18.

The square root of 1121418 is about 1058.9702545398. The cubic root of 1121418 is about 103.8936906768.

Adding to 1121418 its reverse (8141211), we get a palindrome (9262629).

The spelling of 1121418 in words is "one million, one hundred twenty-one thousand, four hundred eighteen".