1340212255 has 16 divisors (see below), whose sum is σ = 1705230144. Its totient is φ = 1007695360.

The previous prime is 1340212249. The next prime is 1340212297. The reversal of 1340212255 is 5522120431.

It is a de Polignac number, because none of the positive numbers 2^k-1340212255 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52545 + ... + 73765.

It is an arithmetic number, because the mean of its divisors is an integer number (106576884).

Almost surely, 2^1340212255 is an apocalyptic number.

1340212255 is a deficient number, since it is larger than the sum of its proper divisors (365017889).

1340212255 is a wasteful number, since it uses less digits than its factorization.

1340212255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21986.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1340212255 is about 36608.9095030158. The cubic root of 1340212255 is about 1102.5319787174.

Adding to 1340212255 its reverse (5522120431), we get a palindrome (6862332686).

The spelling of 1340212255 in words is "one billion, three hundred forty million, two hundred twelve thousand, two hundred fifty-five".