1210140 has 84 divisors (see below), whose sum is σ = 3856104. Its totient is φ = 318816.

The previous prime is 1210127. The next prime is 1210151. The reversal of 1210140 is 410121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a zygodrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 14539 + ... + 14621.

It is an arithmetic number, because the mean of its divisors is an integer number (45906).

2^1210140 is an apocalyptic number.

1210140 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 1210140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1928052).

1210140 is an abundant number, since it is smaller than the sum of its proper divisors (2645964).

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

1210140 is an equidigital number, since it uses as much as digits as its factorization.

1210140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1210140 is about 1100.0636345230. The cubic root of 1210140 is about 106.5643332789.

Adding to 1210140 its reverse (410121), we get a palindrome (1620261).

The spelling of 1210140 in words is "one million, two hundred ten thousand, one hundred forty".