134342021 has 8 divisors (see below), whose sum is σ = 146928864. Its totient is φ = 121817520.

The previous prime is 134341979. The next prime is 134342051. The reversal of 134342021 is 120243431.

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

It is not a de Polignac number, because 134342021 - 2⁶ = 134341957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 134341984 and 134342002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134342051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11015 + ... + 19748.

It is an arithmetic number, because the mean of its divisors is an integer number (18366108).

Almost surely, 2^134342021 is an apocalyptic number.

134342021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

134342021 is a deficient number, since it is larger than the sum of its proper divisors (12586843).

134342021 is a wasteful number, since it uses less digits than its factorization.

134342021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31171.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 134342021 is about 11590.6005452694. The cubic root of 134342021 is about 512.1579979608.

Adding to 134342021 its reverse (120243431), we get a palindrome (254585452).

The spelling of 134342021 in words is "one hundred thirty-four million, three hundred forty-two thousand, twenty-one".