135033421 has 4 divisors (see below), whose sum is σ = 135779644. Its totient is φ = 134287200.

The previous prime is 135033419. The next prime is 135033439. The reversal of 135033421 is 124330531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19900521 + 115132900 = 4461^2 + 10730^2 .

It is a cyclic number.

It is not a de Polignac number, because 135033421 - 2¹ = 135033419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135033392 and 135033401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135033221) 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 3 ways as a sum of consecutive naturals, for example, 372840 + ... + 373201.

It is an arithmetic number, because the mean of its divisors is an integer number (33944911).

Almost surely, 2^135033421 is an apocalyptic number.

It is an amenable number.

135033421 is a deficient number, since it is larger than the sum of its proper divisors (746223).

135033421 is an equidigital number, since it uses as much as digits as its factorization.

135033421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746222.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 135033421 is about 11620.3881604704. The cubic root of 135033421 is about 513.0351131814.

Adding to 135033421 its reverse (124330531), we get a palindrome (259363952).

The spelling of 135033421 in words is "one hundred thirty-five million, thirty-three thousand, four hundred twenty-one".