1241280 has 84 divisors (see below), whose sum is σ = 4279392. Its totient is φ = 330240.

The previous prime is 1241269. The next prime is 1241291. The reversal of 1241280 is 821421.

It is an interprime number because it is at equal distance from previous prime (1241269) and next prime (1241291).

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2665 + ... + 3095.

2^1241280 is an apocalyptic number.

1241280 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 1241280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2139696).

1241280 is an abundant number, since it is smaller than the sum of its proper divisors (3038112).

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

1241280 is a wasteful number, since it uses less digits than its factorization.

1241280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454 (or 441 counting only the distinct ones).

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

The square root of 1241280 is about 1114.1274612898. The cubic root of 1241280 is about 107.4706608234.

It can be divided in two parts, 1241 and 280, that added together give a square (1521 = 39²).

The spelling of 1241280 in words is "one million, two hundred forty-one thousand, two hundred eighty".