1534442420243 has 4 divisors (see below), whose sum is σ = 1567090131360. Its totient is φ = 1501794709128.

The previous prime is 1534442420237. The next prime is 1534442420249. The reversal of 1534442420243 is 3420242444351.

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

It is an interprime number because it is at equal distance from previous prime (1534442420237) and next prime (1534442420249).

It is a cyclic number.

It is not a de Polignac number, because 1534442420243 - 2⁸ = 1534442419987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1534442420197 and 1534442420206.

It is not an unprimeable number, because it can be changed into a prime (1534442420249) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 16323855488 + ... + 16323855581.

It is an arithmetic number, because the mean of its divisors is an integer number (391772532840).

Almost surely, 2^{1534442420243} is an apocalyptic number.

1534442420243 is a deficient number, since it is larger than the sum of its proper divisors (32647711117).

1534442420243 is an equidigital number, since it uses as much as digits as its factorization.

1534442420243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32647711116.

The product of its (nonzero) digits is 368640, while the sum is 38.

Adding to 1534442420243 its reverse (3420242444351), we get a palindrome (4954684864594).

The spelling of 1534442420243 in words is "one trillion, five hundred thirty-four billion, four hundred forty-two million, four hundred twenty thousand, two hundred forty-three".