1340155520 has 128 divisors (see below), whose sum is σ = 3581081280. Its totient is φ = 475340800.

The previous prime is 1340155517. The next prime is 1340155529. The reversal of 1340155520 is 255510431.

1340155520 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 1340155520.

It is not an unprimeable number, because it can be changed into a prime (1340155529) 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 15 ways as a sum of consecutive naturals, for example, 286319 + ... + 290961.

Almost surely, 2^1340155520 is an apocalyptic number.

1340155520 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 1340155520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1790540640).

1340155520 is an abundant number, since it is smaller than the sum of its proper divisors (2240925760).

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

1340155520 is a wasteful number, since it uses less digits than its factorization.

1340155520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4714 (or 4702 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1340155520 is about 36608.1346151371. The cubic root of 1340155520 is about 1102.5164207254.

Adding to 1340155520 its reverse (255510431), we get a palindrome (1595665951).

It can be divided in two parts, 13401 and 55520, that added together give a cube (68921 = 41³).

The spelling of 1340155520 in words is "one billion, three hundred forty million, one hundred fifty-five thousand, five hundred twenty".