135020444 has 24 divisors (see below), whose sum is σ = 255295488. Its totient is φ = 62112960.

The previous prime is 135020429. The next prime is 135020447. The reversal of 135020444 is 444020531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135020447) 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 7 ways as a sum of consecutive naturals, for example, 12389 + ... + 20579.

It is an arithmetic number, because the mean of its divisors is an integer number (10637312).

Almost surely, 2^135020444 is an apocalyptic number.

It is an amenable number.

135020444 is a deficient number, since it is larger than the sum of its proper divisors (120275044).

135020444 is a wasteful number, since it uses less digits than its factorization.

135020444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8525 (or 8523 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 135020444 is about 11619.8297750010. The cubic root of 135020444 is about 513.0186780650.

Adding to 135020444 its reverse (444020531), we get a palindrome (579040975).

The spelling of 135020444 in words is "one hundred thirty-five million, twenty thousand, four hundred forty-four".