135210001 has 4 divisors (see below), whose sum is σ = 136921600. Its totient is φ = 133498404.

The previous prime is 135209989. The next prime is 135210059. The reversal of 135210001 is 100012531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100012531 = 3343 ⋅29917.

It is a cyclic number.

It is not a de Polignac number, because 135210001 - 2⁷ = 135209873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135210601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 855681 + ... + 855838.

It is an arithmetic number, because the mean of its divisors is an integer number (34230400).

Almost surely, 2^135210001 is an apocalyptic number.

It is an amenable number.

135210001 is a deficient number, since it is larger than the sum of its proper divisors (1711599).

135210001 is an equidigital number, since it uses as much as digits as its factorization.

135210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711598.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 135210001 is about 11627.9835311201. The cubic root of 135210001 is about 513.2586437218.

Adding to 135210001 its reverse (100012531), we get a palindrome (235222532).

The spelling of 135210001 in words is "one hundred thirty-five million, two hundred ten thousand, one".