135421886 has 4 divisors (see below), whose sum is σ = 203132832. Its totient is φ = 67710942.

The previous prime is 135421877. The next prime is 135421889. The reversal of 135421886 is 688124531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 688124531 = 83 ⋅8290657.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135421889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33855470 + ... + 33855473.

It is an arithmetic number, because the mean of its divisors is an integer number (50783208).

Almost surely, 2^135421886 is an apocalyptic number.

135421886 is a deficient number, since it is larger than the sum of its proper divisors (67710946).

135421886 is an equidigital number, since it uses as much as digits as its factorization.

135421886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67710945.

The product of its digits is 46080, while the sum is 38.

The square root of 135421886 is about 11637.0909595139. The cubic root of 135421886 is about 513.5266097221.

The spelling of 135421886 in words is "one hundred thirty-five million, four hundred twenty-one thousand, eight hundred eighty-six".