1251322 has 4 divisors (see below), whose sum is σ = 1876986. Its totient is φ = 625660.

The previous prime is 1251317. The next prime is 1251323. The reversal of 1251322 is 2231521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2231521 = 29 ⋅76949.

It can be written as a sum of positive squares in only one way, i.e., 904401 + 346921 = 951^2 + 589^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1251296 and 1251305.

It is not an unprimeable number, because it can be changed into a prime (1251323) 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 as a sum of consecutive naturals, namely, 312829 + ... + 312832.

2^1251322 is an apocalyptic number.

1251322 is a deficient number, since it is larger than the sum of its proper divisors (625664).

1251322 is an equidigital number, since it uses as much as digits as its factorization.

1251322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625663.

The product of its digits is 120, while the sum is 16.

The square root of 1251322 is about 1118.6250488881. The cubic root of 1251322 is about 107.7596966240.

Adding to 1251322 its reverse (2231521), we get a palindrome (3482843).

The spelling of 1251322 in words is "one million, two hundred fifty-one thousand, three hundred twenty-two".