135421884 has 108 divisors (see below), whose sum is σ = 386078056. Its totient is φ = 39783744.

The previous prime is 135421877. The next prime is 135421889. The reversal of 135421884 is 488124531.

135421884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×135421884² = 36678173332218912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135421889) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 247299 + ... + 247845.

Almost surely, 2^135421884 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135421884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193039028).

135421884 is an abundant number, since it is smaller than the sum of its proper divisors (250656172).

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

135421884 is a wasteful number, since it uses less digits than its factorization.

135421884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616 (or 588 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 135421884 is about 11637.0908735818. The cubic root of 135421884 is about 513.5266071941.

The spelling of 135421884 in words is "one hundred thirty-five million, four hundred twenty-one thousand, eight hundred eighty-four".