134147421 has 12 divisors (see below), whose sum is σ = 200945472. Its totient is φ = 89431452.

The previous prime is 134147389. The next prime is 134147441. The reversal of 134147421 is 124741431.

It is not a de Polignac number, because 134147421 - 2⁵ = 134147389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134147441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 275781 + ... + 276266.

It is an arithmetic number, because the mean of its divisors is an integer number (16745456).

Almost surely, 2^134147421 is an apocalyptic number.

It is an amenable number.

134147421 is a deficient number, since it is larger than the sum of its proper divisors (66798051).

134147421 is an frugal number, since it uses more digits than its factorization.

134147421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552062 (or 552050 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 134147421 is about 11582.2027697671. The cubic root of 134147421 is about 511.9105844118.

Adding to 134147421 its reverse (124741431), we get a palindrome (258888852).

The spelling of 134147421 in words is "one hundred thirty-four million, one hundred forty-seven thousand, four hundred twenty-one".