1272122 has 4 divisors (see below), whose sum is σ = 1908186. Its totient is φ = 636060.

The previous prime is 1272113. The next prime is 1272133. The reversal of 1272122 is 2212721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 755161 + 516961 = 869^2 + 719^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1272122.

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 as a sum of consecutive naturals, namely, 318029 + ... + 318032.

2^1272122 is an apocalyptic number.

1272122 is a deficient number, since it is larger than the sum of its proper divisors (636064).

1272122 is an equidigital number, since it uses as much as digits as its factorization.

1272122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636063.

The product of its digits is 112, while the sum is 17.

The square root of 1272122 is about 1127.8838592692. The cubic root of 1272122 is about 108.3534942097.

Adding to 1272122 its reverse (2212721), we get a palindrome (3484843).

The spelling of 1272122 in words is "one million, two hundred seventy-two thousand, one hundred twenty-two".