1340102440 has 16 divisors (see below), whose sum is σ = 3015230580. Its totient is φ = 536040960.

The previous prime is 1340102437. The next prime is 1340102483. The reversal of 1340102440 is 442010431.

It can be written as a sum of positive squares in 2 ways, for example, as 1264655844 + 75446596 = 35562^2 + 8686^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16751241 + ... + 16751320.

Almost surely, 2^1340102440 is an apocalyptic number.

1340102440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340102440 is an abundant number, since it is smaller than the sum of its proper divisors (1675128140).

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

1340102440 is a wasteful number, since it uses less digits than its factorization.

1340102440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33502572 (or 33502568 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1340102440 is about 36607.4096324774. The cubic root of 1340102440 is about 1102.5018646177.

Adding to 1340102440 its reverse (442010431), we get a palindrome (1782112871).

The spelling of 1340102440 in words is "one billion, three hundred forty million, one hundred two thousand, four hundred forty".