1340512445 has 8 divisors (see below), whose sum is σ = 1609701336. Its totient is φ = 1071685696.

The previous prime is 1340512429. The next prime is 1340512451. The reversal of 1340512445 is 5442150431.

It can be written as a sum of positive squares in 4 ways, for example, as 481670809 + 858841636 = 21947^2 + 29306^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1340512445 - 2⁴ = 1340512429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 82322 + ... + 97251.

It is an arithmetic number, because the mean of its divisors is an integer number (201212667).

Almost surely, 2^1340512445 is an apocalyptic number.

It is an amenable number.

1340512445 is a deficient number, since it is larger than the sum of its proper divisors (269188891).

1340512445 is a wasteful number, since it uses less digits than its factorization.

1340512445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181071.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 1340512445 is about 36613.0092316925. The cubic root of 1340512445 is about 1102.6142901487.

Adding to 1340512445 its reverse (5442150431), we get a palindrome (6782662876).

The spelling of 1340512445 in words is "one billion, three hundred forty million, five hundred twelve thousand, four hundred forty-five".