It is an unprimeable number.
21148420 is an apocalyptic number.
1148420 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 1148420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1486464).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1148420 is a wasteful number, since it uses less digits than its factorization.
1148420 is an evil number, because the sum of its binary digits is even.
The square root of 1148420 is about 1071.6435974707. The cubic root of 1148420 is about 104.7209521816.
Subtracting from 1148420 its reverse (248411), we obtain a palindrome (900009).
The spelling of 1148420 in words is "one million, one hundred forty-eight thousand, four hundred twenty".