1340221252 has 24 divisors (see below), whose sum is σ = 2437819776. Its totient is φ = 644138208.

The previous prime is 1340221213. The next prime is 1340221273. The reversal of 1340221252 is 2521220431.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42268 + ... + 66835.

It is an arithmetic number, because the mean of its divisors is an integer number (101575824).

Almost surely, 2^1340221252 is an apocalyptic number.

It is an amenable number.

1340221252 is a deficient number, since it is larger than the sum of its proper divisors (1097598524).

1340221252 is a wasteful number, since it uses less digits than its factorization.

1340221252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109227 (or 109225 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1340221252 is about 36609.0323827331. The cubic root of 1340221252 is about 1102.5344458535.

Adding to 1340221252 its reverse (2521220431), we get a palindrome (3861441683).

The spelling of 1340221252 in words is "one billion, three hundred forty million, two hundred twenty-one thousand, two hundred fifty-two".