1342512809 has 16 divisors (see below), whose sum is σ = 1485735936. Its totient is φ = 1202947200.

The previous prime is 1342512803. The next prime is 1342512817. The reversal of 1342512809 is 9082152431.

It is a cyclic number.

It is not a de Polignac number, because 1342512809 - 2⁴ = 1342512793 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1342512803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216269 + ... + 222389.

It is an arithmetic number, because the mean of its divisors is an integer number (92858496).

Almost surely, 2^1342512809 is an apocalyptic number.

It is an amenable number.

1342512809 is a deficient number, since it is larger than the sum of its proper divisors (143223127).

1342512809 is a wasteful number, since it uses less digits than its factorization.

1342512809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6416.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 1342512809 is about 36640.3167153342. The cubic root of 1342512809 is about 1103.1624719877.

The spelling of 1342512809 in words is "one billion, three hundred forty-two million, five hundred twelve thousand, eight hundred nine".