1305423140402 has 8 divisors (see below), whose sum is σ = 1958149348716. Its totient is φ = 652706690832.

The previous prime is 1305423140393. The next prime is 1305423140443. The reversal of 1305423140402 is 2040413245031.

It can be written as a sum of positive squares in 2 ways, for example, as 1279163262001 + 26259878401 = 1131001^2 + 162049^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2095553 + ... + 2646164.

Almost surely, 2^{1305423140402} is an apocalyptic number.

1305423140402 is a deficient number, since it is larger than the sum of its proper divisors (652726208314).

1305423140402 is a wasteful number, since it uses less digits than its factorization.

1305423140402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4879372.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 1305423140402 its reverse (2040413245031), we get a palindrome (3345836385433).

The spelling of 1305423140402 in words is "one trillion, three hundred five billion, four hundred twenty-three million, one hundred forty thousand, four hundred two".