135009207 has 32 divisors (see below), whose sum is σ = 206835200. Its totient is φ = 86982336.

The previous prime is 135009197. The next prime is 135009299. The reversal of 135009207 is 702900531.

It is not a de Polignac number, because 135009207 - 2²² = 130814903 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135007207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119019 + ... + 120147.

It is an arithmetic number, because the mean of its divisors is an integer number (6463600).

Almost surely, 2^135009207 is an apocalyptic number.

135009207 is a deficient number, since it is larger than the sum of its proper divisors (71825993).

135009207 is a wasteful number, since it uses less digits than its factorization.

135009207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284 (or 1278 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 135009207 is about 11619.3462380635. The cubic root of 135009207 is about 513.0044457739.

Adding to 135009207 its reverse (702900531), we get a palindrome (837909738).

The spelling of 135009207 in words is "one hundred thirty-five million, nine thousand, two hundred seven".