134032721 has 2 divisors, whose sum is σ = 134032722. Its totient is φ = 134032720.

The previous prime is 134032699. The next prime is 134032727. The reversal of 134032721 is 127230431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97792321 + 36240400 = 9889^2 + 6020^2 .

It is a cyclic number.

It is not a de Polignac number, because 134032721 - 2²² = 129838417 is a prime.

It is not a weakly prime, because it can be changed into another prime (134032727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67016360 + 67016361.

It is an arithmetic number, because the mean of its divisors is an integer number (67016361).

Almost surely, 2^134032721 is an apocalyptic number.

It is an amenable number.

134032721 is a deficient number, since it is larger than the sum of its proper divisors (1).

134032721 is an equidigital number, since it uses as much as digits as its factorization.

134032721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 134032721 is about 11577.2501484593. The cubic root of 134032721 is about 511.7646432619.

The spelling of 134032721 in words is "one hundred thirty-four million, thirty-two thousand, seven hundred twenty-one".