1261304 has 24 divisors (see below), whose sum is σ = 2601480. Its totient is φ = 572880.

The previous prime is 1261301. The next prime is 1261313. The reversal of 1261304 is 4031621.

It is a Smith number, since the sum of its digits (17) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 317 + ... + 1619.

It is an arithmetic number, because the mean of its divisors is an integer number (108395).

2^1261304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1261304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1300740).

1261304 is an abundant number, since it is smaller than the sum of its proper divisors (1340176).

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

1261304 is a wasteful number, since it uses less digits than its factorization.

1261304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331 (or 1316 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1261304 is about 1123.0779135928. The cubic root of 1261304 is about 108.0454769611.

Adding to 1261304 its reverse (4031621), we get a palindrome (5292925).

It can be divided in two parts, 12 and 61304, that added together give a palindrome (61316).

The spelling of 1261304 in words is "one million, two hundred sixty-one thousand, three hundred four".