135443412 has 72 divisors (see below), whose sum is σ = 384768384. Its totient is φ = 39859776.

The previous prime is 135443411. The next prime is 135443423. The reversal of 135443412 is 214344531.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135443411) 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, 4473 + ... + 17055.

Almost surely, 2^135443412 is an apocalyptic number.

135443412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135443412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192384192).

135443412 is an abundant number, since it is smaller than the sum of its proper divisors (249324972).

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

135443412 is a wasteful number, since it uses less digits than its factorization.

135443412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12629 (or 12624 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 135443412 is about 11638.0158102659. The cubic root of 135443412 is about 513.5538175058.

Adding to 135443412 its reverse (214344531), we get a palindrome (349787943).

The spelling of 135443412 in words is "one hundred thirty-five million, four hundred forty-three thousand, four hundred twelve".