134133721 has 2 divisors, whose sum is σ = 134133722. Its totient is φ = 134133720.

The previous prime is 134133691. The next prime is 134133739. The reversal of 134133721 is 127331431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86025625 + 48108096 = 9275^2 + 6936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134133721 is a prime.

It is not a weakly prime, because it can be changed into another prime (134133781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67066860 + 67066861.

It is an arithmetic number, because the mean of its divisors is an integer number (67066861).

Almost surely, 2^134133721 is an apocalyptic number.

It is an amenable number.

134133721 is a deficient number, since it is larger than the sum of its proper divisors (1).

134133721 is an equidigital number, since it uses as much as digits as its factorization.

134133721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 25.

The square root of 134133721 is about 11581.6113300352. The cubic root of 134133721 is about 511.8931572815.

The spelling of 134133721 in words is "one hundred thirty-four million, one hundred thirty-three thousand, seven hundred twenty-one".