135053040421 has 24 divisors (see below), whose sum is σ = 158194750560. Its totient is φ = 114293086560.

The previous prime is 135053040413. The next prime is 135053040461. The reversal of 135053040421 is 124040350531.

It is not a de Polignac number, because 135053040421 - 2³ = 135053040413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135053040421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135053040461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47115 + ... + 521848.

It is an arithmetic number, because the mean of its divisors is an integer number (6591447940).

Almost surely, 2^135053040421 is an apocalyptic number.

It is an amenable number.

135053040421 is a deficient number, since it is larger than the sum of its proper divisors (23141710139).

135053040421 is a wasteful number, since it uses less digits than its factorization.

135053040421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569057 (or 569026 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 135053040421 its reverse (124040350531), we get a palindrome (259093390952).

The spelling of 135053040421 in words is "one hundred thirty-five billion, fifty-three million, forty thousand, four hundred twenty-one".