1322688242 has 4 divisors (see below), whose sum is σ = 1984032366. Its totient is φ = 661344120.

The previous prime is 1322688221. The next prime is 1322688271. The reversal of 1322688242 is 2428862231.

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., 1309064761 + 13623481 = 36181^2 + 3691^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1322688196 and 1322688205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330672059 + ... + 330672062.

Almost surely, 2^1322688242 is an apocalyptic number.

1322688242 is a deficient number, since it is larger than the sum of its proper divisors (661344124).

1322688242 is an equidigital number, since it uses as much as digits as its factorization.

1322688242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661344123.

The product of its digits is 73728, while the sum is 38.

The square root of 1322688242 is about 36368.7811453725. The cubic root of 1322688242 is about 1097.7054766161.

The spelling of 1322688242 in words is "one billion, three hundred twenty-two million, six hundred eighty-eight thousand, two hundred forty-two".