134244021 has 8 divisors (see below), whose sum is σ = 180027360. Its totient is φ = 88978352.

The previous prime is 134244013. The next prime is 134244037. The reversal of 134244021 is 120442431.

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 134244021 - 2³ = 134244013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134244041) 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, 128811 + ... + 129848.

It is an arithmetic number, because the mean of its divisors is an integer number (22503420).

Almost surely, 2^134244021 is an apocalyptic number.

It is an amenable number.

134244021 is a deficient number, since it is larger than the sum of its proper divisors (45783339).

134244021 is a wasteful number, since it uses less digits than its factorization.

134244021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258835.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 134244021 is about 11586.3722104894. The cubic root of 134244021 is about 512.0334310955.

Adding to 134244021 its reverse (120442431), we get a palindrome (254686452).

The spelling of 134244021 in words is "one hundred thirty-four million, two hundred forty-four thousand, twenty-one".