1148420 has 48 divisors (see below), whose sum is σ = 2972928. Its totient is φ = 362880.

The previous prime is 1148387. The next prime is 1148437. The reversal of 1148420 is 248411.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1148392 and 1148401.

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, 1505 + ... + 2135.

It is an arithmetic number, because the mean of its divisors is an integer number (61936).

2^1148420 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).

1148420 is an abundant number, since it is smaller than the sum of its proper divisors (1824508).

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 sum of its prime factors is 660 (or 658 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

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".