134021539 has 2 divisors, whose sum is σ = 134021540. Its totient is φ = 134021538.

The previous prime is 134021513. The next prime is 134021549. The reversal of 134021539 is 935120431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134021539 is a prime.

It is not a weakly prime, because it can be changed into another prime (134021549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67010769 + 67010770.

It is an arithmetic number, because the mean of its divisors is an integer number (67010770).

Almost surely, 2^134021539 is an apocalyptic number.

134021539 is a deficient number, since it is larger than the sum of its proper divisors (1).

134021539 is an equidigital number, since it uses as much as digits as its factorization.

134021539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 134021539 is about 11576.7672085086. The cubic root of 134021539 is about 511.7504111367.

It can be divided in two parts, 13402 and 1539, that added together give a palindrome (14941).

The spelling of 134021539 in words is "one hundred thirty-four million, twenty-one thousand, five hundred thirty-nine".