1210240 has 64 divisors (see below), whose sum is σ = 3035520. Its totient is φ = 460800.

The previous prime is 1210229. The next prime is 1210241. The reversal of 1210240 is 420121.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19810 + ... + 19870.

It is an arithmetic number, because the mean of its divisors is an integer number (47430).

2^1210240 is an apocalyptic number.

1210240 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 1210240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1517760).

1210240 is an abundant number, since it is smaller than the sum of its proper divisors (1825280).

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

1210240 is an equidigital number, since it uses as much as digits as its factorization.

1210240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1210240 is about 1100.1090855002. The cubic root of 1210240 is about 106.5672685150.

Adding to 1210240 its reverse (420121), we get a palindrome (1630361).

The spelling of 1210240 in words is "one million, two hundred ten thousand, two hundred forty".