134001521 has 2 divisors, whose sum is σ = 134001522. Its totient is φ = 134001520.

The previous prime is 134001493. The next prime is 134001529. The reversal of 134001521 is 125100431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133171600 + 829921 = 11540^2 + 911^2 .

It is an emirp because it is prime and its reverse (125100431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134001521 - 2¹⁰ = 134000497 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 134001521.

It is not a weakly prime, because it can be changed into another prime (134001529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67000760 + 67000761.

It is an arithmetic number, because the mean of its divisors is an integer number (67000761).

Almost surely, 2^134001521 is an apocalyptic number.

It is an amenable number.

134001521 is a deficient number, since it is larger than the sum of its proper divisors (1).

134001521 is an equidigital number, since it uses as much as digits as its factorization.

134001521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 134001521 is about 11575.9025997976. The cubic root of 134001521 is about 511.7249308298.

Adding to 134001521 its reverse (125100431), we get a palindrome (259101952).

The spelling of 134001521 in words is "one hundred thirty-four million, one thousand, five hundred twenty-one".