134646021 has 12 divisors (see below), whose sum is σ = 194720448. Its totient is φ = 89657064.

The previous prime is 134646007. The next prime is 134646041. The reversal of 134646021 is 120646431.

134646021 is a `hidden beast` number, since 13 + 4 + 646 + 0 + 2 + 1 = 666.

It is not a de Polignac number, because 134646021 - 2⁶ = 134645957 is a prime.

It is a super-2 number, since 2×134646021² = 36259101942264882, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134646041) 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, 525 + ... + 16418.

It is an arithmetic number, because the mean of its divisors is an integer number (16226704).

Almost surely, 2^134646021 is an apocalyptic number.

It is an amenable number.

134646021 is a deficient number, since it is larger than the sum of its proper divisors (60074427).

134646021 is a wasteful number, since it uses less digits than its factorization.

134646021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17832 (or 17829 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 134646021 is about 11603.7072093362. The cubic root of 134646021 is about 512.5440244553.

The spelling of 134646021 in words is "one hundred thirty-four million, six hundred forty-six thousand, twenty-one".