135421413243 has 4 divisors (see below), whose sum is σ = 180561884328. Its totient is φ = 90280942160.

The previous prime is 135421413227. The next prime is 135421413287. The reversal of 135421413243 is 342314124531.

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 135421413243 - 2⁴ = 135421413227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135421413223) 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, 22570235538 + ... + 22570235543.

It is an arithmetic number, because the mean of its divisors is an integer number (45140471082).

Almost surely, 2^135421413243 is an apocalyptic number.

135421413243 is a deficient number, since it is larger than the sum of its proper divisors (45140471085).

135421413243 is an equidigital number, since it uses as much as digits as its factorization.

135421413243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45140471084.

The product of its digits is 34560, while the sum is 33.

Adding to 135421413243 its reverse (342314124531), we get a palindrome (477735537774).

The spelling of 135421413243 in words is "one hundred thirty-five billion, four hundred twenty-one million, four hundred thirteen thousand, two hundred forty-three".