135142404440 has 32 divisors (see below), whose sum is σ = 305598420000. Its totient is φ = 53785315584.

The previous prime is 135142404421. The next prime is 135142404541. The reversal of 135142404440 is 44404241531.

It is a junction number, because it is equal to n+sod(n) for n = 135142404397 and 135142404406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8480885 + ... + 8496804.

It is an arithmetic number, because the mean of its divisors is an integer number (9549950625).

Almost surely, 2^135142404440 is an apocalyptic number.

135142404440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135142404440 is an abundant number, since it is smaller than the sum of its proper divisors (170456015560).

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

135142404440 is a wasteful number, since it uses less digits than its factorization.

135142404440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16977899 (or 16977895 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 135142404440 its reverse (44404241531), we get a palindrome (179546645971).

The spelling of 135142404440 in words is "one hundred thirty-five billion, one hundred forty-two million, four hundred four thousand, four hundred forty".