1205140 has 12 divisors (see below), whose sum is σ = 2530836. Its totient is φ = 482048.

The previous prime is 1205123. The next prime is 1205159. The reversal of 1205140 is 415021.

It can be written as a sum of positive squares in 2 ways, for example, as 712336 + 492804 = 844^2 + 702^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1205140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30109 + ... + 30148.

It is an arithmetic number, because the mean of its divisors is an integer number (210903).

2^1205140 is an apocalyptic number.

1205140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1205140 is an abundant number, since it is smaller than the sum of its proper divisors (1325696).

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

1205140 is a wasteful number, since it uses less digits than its factorization.

1205140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60266 (or 60264 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1205140 is about 1097.7886864055. The cubic root of 1205140 is about 106.4173648331.

The spelling of 1205140 in words is "one million, two hundred five thousand, one hundred forty".