135124121 has 8 divisors (see below), whose sum is σ = 148022688. Its totient is φ = 122328000.

The previous prime is 135124117. The next prime is 135124127. The reversal of 135124121 is 121421531.

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

It is a cyclic number.

It is not a de Polignac number, because 135124121 - 2² = 135124117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135124093 and 135124102.

It is not an unprimeable number, because it can be changed into a prime (135124127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22835 + ... + 28136.

It is an arithmetic number, because the mean of its divisors is an integer number (18502836).

Almost surely, 2^135124121 is an apocalyptic number.

135124121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

135124121 is a deficient number, since it is larger than the sum of its proper divisors (12898567).

135124121 is a wasteful number, since it uses less digits than its factorization.

135124121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51223.

The product of its digits is 240, while the sum is 20.

The square root of 135124121 is about 11624.2901288638. The cubic root of 135124121 is about 513.1499535667.

Adding to 135124121 its reverse (121421531), we get a palindrome (256545652).

The spelling of 135124121 in words is "one hundred thirty-five million, one hundred twenty-four thousand, one hundred twenty-one".