134820571 has 2 divisors, whose sum is σ = 134820572. Its totient is φ = 134820570.

The previous prime is 134820481. The next prime is 134820601. The reversal of 134820571 is 175028431.

It is a strong prime.

It is an emirp because it is prime and its reverse (175028431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134820571 - 2⁷ = 134820443 is a prime.

It is not a weakly prime, because it can be changed into another prime (134850571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67410285 + 67410286.

It is an arithmetic number, because the mean of its divisors is an integer number (67410286).

Almost surely, 2^134820571 is an apocalyptic number.

134820571 is a deficient number, since it is larger than the sum of its proper divisors (1).

134820571 is an equidigital number, since it uses as much as digits as its factorization.

134820571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 134820571 is about 11611.2260765175. The cubic root of 134820571 is about 512.7654097022.

The spelling of 134820571 in words is "one hundred thirty-four million, eight hundred twenty thousand, five hundred seventy-one".