134526821 has 32 divisors (see below), whose sum is σ = 169075200. Its totient is φ = 105209280.

The previous prime is 134526811. The next prime is 134526823. The reversal of 134526821 is 128625431.

It is not a de Polignac number, because 134526821 - 2¹⁴ = 134510437 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 (134526823) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 181670 + ... + 182408.

It is an arithmetic number, because the mean of its divisors is an integer number (5283600).

Almost surely, 2^134526821 is an apocalyptic number.

134526821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

134526821 is a deficient number, since it is larger than the sum of its proper divisors (34548379).

134526821 is a wasteful number, since it uses less digits than its factorization.

134526821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849.

The product of its digits is 11520, while the sum is 32.

The square root of 134526821 is about 11598.5697825206. The cubic root of 134526821 is about 512.3927307519.

The spelling of 134526821 in words is "one hundred thirty-four million, five hundred twenty-six thousand, eight hundred twenty-one".