135141247 has 4 divisors (see below), whose sum is σ = 139801320. Its totient is φ = 130481176.

The previous prime is 135141233. The next prime is 135141277. The reversal of 135141247 is 742141531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 742141531 = 3251 ⋅228281.

It is a cyclic number.

It is not a de Polignac number, because 135141247 - 2⁷ = 135141119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135141277) 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, 2329993 + ... + 2330050.

It is an arithmetic number, because the mean of its divisors is an integer number (34950330).

Almost surely, 2^135141247 is an apocalyptic number.

135141247 is a deficient number, since it is larger than the sum of its proper divisors (4660073).

135141247 is an equidigital number, since it uses as much as digits as its factorization.

135141247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4660072.

The product of its digits is 3360, while the sum is 28.

The square root of 135141247 is about 11625.0267526574. The cubic root of 135141247 is about 513.1716319929.

Adding to 135141247 its reverse (742141531), we get a palindrome (877282778).

The spelling of 135141247 in words is "one hundred thirty-five million, one hundred forty-one thousand, two hundred forty-seven".