135245140 has 12 divisors (see below), whose sum is σ = 284014836. Its totient is φ = 54098048.

The previous prime is 135245137. The next prime is 135245147. The reversal of 135245140 is 41542531.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39087504 + 96157636 = 6252^2 + 9806^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135245147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3381109 + ... + 3381148.

It is an arithmetic number, because the mean of its divisors is an integer number (23667903).

Almost surely, 2^135245140 is an apocalyptic number.

135245140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135245140 is an abundant number, since it is smaller than the sum of its proper divisors (148769696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135245140 is a wasteful number, since it uses less digits than its factorization.

135245140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6762266 (or 6762264 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 135245140 is about 11629.4944000158. The cubic root of 135245140 is about 513.3031025468.

Adding to 135245140 its reverse (41542531), we get a palindrome (176787671).

The spelling of 135245140 in words is "one hundred thirty-five million, two hundred forty-five thousand, one hundred forty".