1305451442023 has 4 divisors (see below), whose sum is σ = 1335810777928. Its totient is φ = 1275092106120.

The previous prime is 1305451442021. The next prime is 1305451442063. The reversal of 1305451442023 is 3202441545031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1305451442023 - 2¹ = 1305451442021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1305451442023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305451442021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15179667888 + ... + 15179667973.

It is an arithmetic number, because the mean of its divisors is an integer number (333952694482).

Almost surely, 2^{1305451442023} is an apocalyptic number.

1305451442023 is a deficient number, since it is larger than the sum of its proper divisors (30359335905).

1305451442023 is an equidigital number, since it uses as much as digits as its factorization.

1305451442023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30359335904.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 1305451442023 its reverse (3202441545031), we get a palindrome (4507892987054).

The spelling of 1305451442023 in words is "one trillion, three hundred five billion, four hundred fifty-one million, four hundred forty-two thousand, twenty-three".