134525021 has 2 divisors, whose sum is σ = 134525022. Its totient is φ = 134525020.

The previous prime is 134525011. The next prime is 134525023. The reversal of 134525021 is 120525431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111619225 + 22905796 = 10565^2 + 4786^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134525021 is a prime.

Together with 134525023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134525023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67262510 + 67262511.

It is an arithmetic number, because the mean of its divisors is an integer number (67262511).

Almost surely, 2^134525021 is an apocalyptic number.

It is an amenable number.

134525021 is a deficient number, since it is larger than the sum of its proper divisors (1).

134525021 is an equidigital number, since it uses as much as digits as its factorization.

134525021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 134525021 is about 11598.4921864870. The cubic root of 134525021 is about 512.3904454306.

The spelling of 134525021 in words is "one hundred thirty-four million, five hundred twenty-five thousand, twenty-one".