1340421322 has 4 divisors (see below), whose sum is σ = 2010631986. Its totient is φ = 670210660.

The previous prime is 1340421319. The next prime is 1340421337. The reversal of 1340421322 is 2231240431.

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., 1208883361 + 131537961 = 34769^2 + 11469^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1340421293 and 1340421302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335105329 + ... + 335105332.

Almost surely, 2^1340421322 is an apocalyptic number.

1340421322 is a deficient number, since it is larger than the sum of its proper divisors (670210664).

1340421322 is an equidigital number, since it uses as much as digits as its factorization.

1340421322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670210663.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1340421322 is about 36611.7648031340. The cubic root of 1340421322 is about 1102.5893057235.

Adding to 1340421322 its reverse (2231240431), we get a palindrome (3571661753).

The spelling of 1340421322 in words is "one billion, three hundred forty million, four hundred twenty-one thousand, three hundred twenty-two".