135240125201 has 4 divisors (see below), whose sum is σ = 136952025600. Its totient is φ = 133528224804.

The previous prime is 135240125191. The next prime is 135240125219. The reversal of 135240125201 is 102521042531.

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.

It is a cyclic number.

It is not a de Polignac number, because 135240125201 - 2²² = 135235930897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135240125221) 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, 855950081 + ... + 855950238.

It is an arithmetic number, because the mean of its divisors is an integer number (34238006400).

Almost surely, 2^135240125201 is an apocalyptic number.

It is an amenable number.

135240125201 is a deficient number, since it is larger than the sum of its proper divisors (1711900399).

135240125201 is an equidigital number, since it uses as much as digits as its factorization.

135240125201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711900398.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 135240125201 its reverse (102521042531), we get a palindrome (237761167732).

The spelling of 135240125201 in words is "one hundred thirty-five billion, two hundred forty million, one hundred twenty-five thousand, two hundred one".