135828421 has 8 divisors (see below), whose sum is σ = 138890304. Its totient is φ = 132800640.

The previous prime is 135828383. The next prime is 135828439. The reversal of 135828421 is 124828531.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135828421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135828481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385 + ... + 16486.

It is an arithmetic number, because the mean of its divisors is an integer number (17361288).

Almost surely, 2^135828421 is an apocalyptic number.

It is an amenable number.

135828421 is a deficient number, since it is larger than the sum of its proper divisors (3061883).

135828421 is an equidigital number, since it uses as much as digits as its factorization.

135828421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17051.

The product of its digits is 15360, while the sum is 34.

The square root of 135828421 is about 11654.5450790668. The cubic root of 135828421 is about 514.0399634328.

The spelling of 135828421 in words is "one hundred thirty-five million, eight hundred twenty-eight thousand, four hundred twenty-one".