135302121 has 12 divisors (see below), whose sum is σ = 195766272. Its totient is φ = 90049176.

The previous prime is 135302119. The next prime is 135302147. The reversal of 135302121 is 121203531.

135302121 is a `hidden beast` number, since 13 + 530 + 2 + 121 = 666.

It is not a de Polignac number, because 135302121 - 2¹ = 135302119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135302094 and 135302103.

It is not an unprimeable number, because it can be changed into a prime (135302521) 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 11 ways as a sum of consecutive naturals, for example, 6921 + ... + 17846.

It is an arithmetic number, because the mean of its divisors is an integer number (16313856).

Almost surely, 2^135302121 is an apocalyptic number.

It is an amenable number.

135302121 is a deficient number, since it is larger than the sum of its proper divisors (60464151).

135302121 is a wasteful number, since it uses less digits than its factorization.

135302121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25380 (or 25377 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 135302121 is about 11631.9439905804. The cubic root of 135302121 is about 513.3751801027.

Adding to 135302121 its reverse (121203531), we get a palindrome (256505652).

It can be divided in two parts, 13530 and 2121, that added together give a palindrome (15651).

The spelling of 135302121 in words is "one hundred thirty-five million, three hundred two thousand, one hundred twenty-one".