1340252655 has 96 divisors (see below), whose sum is σ = 2564835840. Its totient is φ = 595687680.

The previous prime is 1340252651. The next prime is 1340252671. The reversal of 1340252655 is 5562520431.

It is not a de Polignac number, because 1340252655 - 2² = 1340252651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340252651) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 7487356 + ... + 7487534.

It is an arithmetic number, because the mean of its divisors is an integer number (26717040).

Almost surely, 2^1340252655 is an apocalyptic number.

1340252655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1340252655 is a deficient number, since it is larger than the sum of its proper divisors (1224583185).

1340252655 is a wasteful number, since it uses less digits than its factorization.

1340252655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 1340252655 is about 36609.4612771070. The cubic root of 1340252655 is about 1102.5430570234.

The spelling of 1340252655 in words is "one billion, three hundred forty million, two hundred fifty-two thousand, six hundred fifty-five".