134401537 has 2 divisors, whose sum is σ = 134401538. Its totient is φ = 134401536.

The previous prime is 134401513. The next prime is 134401583. The reversal of 134401537 is 735104431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117418896 + 16982641 = 10836^2 + 4121^2 .

It is an emirp because it is prime and its reverse (735104431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134401537 - 2²⁷ = 183809 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (134401937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67200768 + 67200769.

It is an arithmetic number, because the mean of its divisors is an integer number (67200769).

Almost surely, 2^134401537 is an apocalyptic number.

It is an amenable number.

134401537 is a deficient number, since it is larger than the sum of its proper divisors (1).

134401537 is an equidigital number, since it uses as much as digits as its factorization.

134401537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 134401537 is about 11593.1676861848. The cubic root of 134401537 is about 512.2336186167.

Adding to 134401537 its reverse (735104431), we get a palindrome (869505968).

The spelling of 134401537 in words is "one hundred thirty-four million, four hundred one thousand, five hundred thirty-seven".