1219240 has 64 divisors (see below), whose sum is σ = 3188160. Its totient is φ = 414720.

The previous prime is 1219237. The next prime is 1219241. The reversal of 1219240 is 429121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1219241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7399 + ... + 7561.

It is an arithmetic number, because the mean of its divisors is an integer number (49815).

2^1219240 is an apocalyptic number.

1219240 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 1219240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1594080).

1219240 is an abundant number, since it is smaller than the sum of its proper divisors (1968920).

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

1219240 is a wasteful number, since it uses less digits than its factorization.

1219240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1219240 is about 1104.1920122877. The cubic root of 1219240 is about 106.8307803569.

The spelling of 1219240 in words is "one million, two hundred nineteen thousand, two hundred forty".