135421451426 has 4 divisors (see below), whose sum is σ = 203132177142. Its totient is φ = 67710725712.

The previous prime is 135421451413. The next prime is 135421451441. The reversal of 135421451426 is 624154124531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 624154124531 = 7 ⋅89164874933.

It can be written as a sum of positive squares in only one way, i.e., 76092670801 + 59328780625 = 275849^2 + 243575^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 135421451426.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33855362855 + ... + 33855362858.

Almost surely, 2^135421451426 is an apocalyptic number.

135421451426 is a deficient number, since it is larger than the sum of its proper divisors (67710725716).

135421451426 is an equidigital number, since it uses as much as digits as its factorization.

135421451426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67710725715.

The product of its digits is 115200, while the sum is 38.

Adding to 135421451426 its reverse (624154124531), we get a palindrome (759575575957).

The spelling of 135421451426 in words is "one hundred thirty-five billion, four hundred twenty-one million, four hundred fifty-one thousand, four hundred twenty-six".