1261322 has 8 divisors (see below), whose sum is σ = 1896996. Its totient is φ = 628992.

The previous prime is 1261321. The next prime is 1261327. The reversal of 1261322 is 2231621.

It can be written as a sum of positive squares in 2 ways, for example, as 758641 + 502681 = 871^2 + 709^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1261322.

It is not an unprimeable number, because it can be changed into a prime (1261321) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 608 + ... + 1700.

2^1261322 is an apocalyptic number.

1261322 is a deficient number, since it is larger than the sum of its proper divisors (635674).

1261322 is a wasteful number, since it uses less digits than its factorization.

1261322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672.

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

The square root of 1261322 is about 1123.0859272558. The cubic root of 1261322 is about 108.0459909290.

Adding to 1261322 its reverse (2231621), we get a palindrome (3492943).

Subtracting 1261322 from its reverse (2231621), we obtain a cube (970299 = 99³).

The spelling of 1261322 in words is "one million, two hundred sixty-one thousand, three hundred twenty-two".