1124280 has 80 divisors (see below), whose sum is σ = 3789720. Its totient is φ = 298944.

The previous prime is 1124269. The next prime is 1124293. The reversal of 1124280 is 824211.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3067 + ... + 3413.

2^1124280 is an apocalyptic number.

1124280 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 1124280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1894860).

1124280 is an abundant number, since it is smaller than the sum of its proper divisors (2665440).

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

1124280 is a wasteful number, since it uses less digits than its factorization.

1124280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370 (or 357 counting only the distinct ones).

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

The square root of 1124280 is about 1060.3207062017. The cubic root of 1124280 is about 103.9819988568.

Adding to 1124280 its reverse (824211), we get a palindrome (1948491).

The spelling of 1124280 in words is "one million, one hundred twenty-four thousand, two hundred eighty".