15432142243 has 4 divisors (see below), whose sum is σ = 17636734000. Its totient is φ = 13227550488.

The previous prime is 15432142211. The next prime is 15432142249. The reversal of 15432142243 is 34224123451.

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 15432142243 - 2⁵ = 15432142211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15432142249) 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, 1102295868 + ... + 1102295881.

It is an arithmetic number, because the mean of its divisors is an integer number (4409183500).

Almost surely, 2^15432142243 is an apocalyptic number.

15432142243 is a deficient number, since it is larger than the sum of its proper divisors (2204591757).

15432142243 is an equidigital number, since it uses as much as digits as its factorization.

15432142243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2204591756.

The product of its digits is 23040, while the sum is 31.

Adding to 15432142243 its reverse (34224123451), we get a palindrome (49656265694).

The spelling of 15432142243 in words is "fifteen billion, four hundred thirty-two million, one hundred forty-two thousand, two hundred forty-three".