135444442 has 32 divisors (see below), whose sum is σ = 241056000. Its totient is φ = 55845888.

The previous prime is 135444431. The next prime is 135444451. The reversal of 135444442 is 244444531.

135444442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181923 + ... + 182665.

It is an arithmetic number, because the mean of its divisors is an integer number (7533000).

Almost surely, 2^135444442 is an apocalyptic number.

135444442 is a deficient number, since it is larger than the sum of its proper divisors (105611558).

135444442 is a wasteful number, since it uses less digits than its factorization.

135444442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230.

The product of its digits is 30720, while the sum is 31.

The square root of 135444442 is about 11638.0600617113. The cubic root of 135444442 is about 513.5551193018. Note that the first 3 decimals are identical.

Adding to 135444442 its reverse (244444531), we get a palindrome (379888973).

It can be divided in two parts, 1354 and 44442, that added together give a square (45796 = 214²).

The spelling of 135444442 in words is "one hundred thirty-five million, four hundred forty-four thousand, four hundred forty-two".