1345257129 has 8 divisors (see below), whose sum is σ = 1798195840. Its totient is φ = 894578256.

The previous prime is 1345257127. The next prime is 1345257131. The reversal of 1345257129 is 9217525431.

It is an interprime number because it is at equal distance from previous prime (1345257127) and next prime (1345257131).

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

It is not a de Polignac number, because 1345257129 - 2¹ = 1345257127 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345257127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563569 + ... + 565950.

It is an arithmetic number, because the mean of its divisors is an integer number (224774480).

Almost surely, 2^1345257129 is an apocalyptic number.

It is an amenable number.

1345257129 is a deficient number, since it is larger than the sum of its proper divisors (452938711).

1345257129 is a wasteful number, since it uses less digits than its factorization.

1345257129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129919.

The product of its digits is 75600, while the sum is 39.

The square root of 1345257129 is about 36677.7470545834. The cubic root of 1345257129 is about 1103.9136430496.

The spelling of 1345257129 in words is "one billion, three hundred forty-five million, two hundred fifty-seven thousand, one hundred twenty-nine".