136271421 has 24 divisors (see below), whose sum is σ = 231250656. Its totient is φ = 76235040.

The previous prime is 136271417. The next prime is 136271431. The reversal of 136271421 is 124172631.

136271421 is a `hidden beast` number, since 1 + 3 + 627 + 14 + 21 = 666.

It is not a de Polignac number, because 136271421 - 2² = 136271417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136271431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51655 + ... + 54228.

It is an arithmetic number, because the mean of its divisors is an integer number (9635444).

Almost surely, 2^136271421 is an apocalyptic number.

136271421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

136271421 is a deficient number, since it is larger than the sum of its proper divisors (94979235).

136271421 is a wasteful number, since it uses less digits than its factorization.

136271421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105913 (or 105910 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 136271421 is about 11673.5350686928. The cubic root of 136271421 is about 514.5981985525.

The spelling of 136271421 in words is "one hundred thirty-six million, two hundred seventy-one thousand, four hundred twenty-one".