1340240000 has 160 divisors (see below), whose sum is σ = 3642146640. Its totient is φ = 487040000.

The previous prime is 1340239997. The next prime is 1340240009. The reversal of 1340240000 is 420431.

It is a tau number, because it is divible by the number of its divisors (160).

It is not an unprimeable number, because it can be changed into a prime (1340240009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 879239 + ... + 880761.

Almost surely, 2^1340240000 is an apocalyptic number.

1340240000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1340240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1821073320).

1340240000 is an abundant number, since it is smaller than the sum of its proper divisors (2301906640).

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

1340240000 is an equidigital number, since it uses as much as digits as its factorization.

1340240000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568 (or 1541 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1340240000 is about 36609.2884388648. The cubic root of 1340240000 is about 1102.5395868503.

Adding to 1340240000 its reverse (420431), we get a palindrome (1340660431).

The spelling of 1340240000 in words is "one billion, three hundred forty million, two hundred forty thousand".