1340021334 has 16 divisors (see below), whose sum is σ = 2725467840. Its totient is φ = 439102920.

The previous prime is 1340021329. The next prime is 1340021359. The reversal of 1340021334 is 4331200431.

It is a self number, because there is not a number n which added to its sum of digits gives 1340021334.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 1892332 + ... + 1893039.

It is an arithmetic number, because the mean of its divisors is an integer number (170341740).

Almost surely, 2^1340021334 is an apocalyptic number.

1340021334 is an abundant number, since it is smaller than the sum of its proper divisors (1385446506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1340021334 is a wasteful number, since it uses less digits than its factorization.

1340021334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3785435.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1340021334 is about 36606.3018345202. The cubic root of 1340021334 is about 1102.4796222086.

Adding to 1340021334 its reverse (4331200431), we get a palindrome (5671221765).

The spelling of 1340021334 in words is "one billion, three hundred forty million, twenty-one thousand, three hundred thirty-four".