135421418 has 8 divisors (see below), whose sum is σ = 221598720. Its totient is φ = 61555180.

The previous prime is 135421411. The next prime is 135421441. The reversal of 135421418 is 814124531.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135421411) 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, 3077738 + ... + 3077781.

It is an arithmetic number, because the mean of its divisors is an integer number (27699840).

Almost surely, 2^135421418 is an apocalyptic number.

135421418 is a deficient number, since it is larger than the sum of its proper divisors (86177302).

135421418 is a wasteful number, since it uses less digits than its factorization.

135421418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6155532.

The product of its digits is 3840, while the sum is 29.

The square root of 135421418 is about 11637.0708513784. The cubic root of 135421418 is about 513.5260181616.

Adding to 135421418 its reverse (814124531), we get a palindrome (949545949).

The spelling of 135421418 in words is "one hundred thirty-five million, four hundred twenty-one thousand, four hundred eighteen".