134264021 has 4 divisors (see below), whose sum is σ = 134563500. Its totient is φ = 133964544.

The previous prime is 134264003. The next prime is 134264029. The reversal of 134264021 is 120462431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28462225 + 105801796 = 5335^2 + 10286^2 .

It is a cyclic number.

It is not a de Polignac number, because 134264021 - 2⁶ = 134263957 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 (134264029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149066 + ... + 149963.

It is an arithmetic number, because the mean of its divisors is an integer number (33640875).

Almost surely, 2^134264021 is an apocalyptic number.

It is an amenable number.

134264021 is a deficient number, since it is larger than the sum of its proper divisors (299479).

134264021 is an equidigital number, since it uses as much as digits as its factorization.

134264021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299478.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 134264021 is about 11587.2352612692. The cubic root of 134264021 is about 512.0588578271.

The spelling of 134264021 in words is "one hundred thirty-four million, two hundred sixty-four thousand, twenty-one".