135426491 has 4 divisors (see below), whose sum is σ = 140096400. Its totient is φ = 130756584.

The previous prime is 135426469. The next prime is 135426503. The reversal of 135426491 is 194624531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 194624531 = 10133 ⋅19207.

It is a cyclic number.

It is not a de Polignac number, because 135426491 - 2⁶ = 135426427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135426791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2334911 + ... + 2334968.

It is an arithmetic number, because the mean of its divisors is an integer number (35024100).

Almost surely, 2^135426491 is an apocalyptic number.

135426491 is a deficient number, since it is larger than the sum of its proper divisors (4669909).

135426491 is an equidigital number, since it uses as much as digits as its factorization.

135426491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4669908.

The product of its digits is 25920, while the sum is 35.

The square root of 135426491 is about 11637.2888165586. The cubic root of 135426491 is about 513.5324304534.

The spelling of 135426491 in words is "one hundred thirty-five million, four hundred twenty-six thousand, four hundred ninety-one".