134181421 has 8 divisors (see below), whose sum is σ = 148233600. Its totient is φ = 120438240.

The previous prime is 134181407. The next prime is 134181431. The reversal of 134181421 is 124181431.

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 134181421 - 2⁵ = 134181389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134181431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76336 + ... + 78073.

It is an arithmetic number, because the mean of its divisors is an integer number (18529200).

Almost surely, 2^134181421 is an apocalyptic number.

134181421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

134181421 is a deficient number, since it is larger than the sum of its proper divisors (14052179).

134181421 is a wasteful number, since it uses less digits than its factorization.

134181421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154499.

The product of its digits is 768, while the sum is 25.

The square root of 134181421 is about 11583.6704459338. The cubic root of 134181421 is about 511.9538290987.

The spelling of 134181421 in words is "one hundred thirty-four million, one hundred eighty-one thousand, four hundred twenty-one".