135512412 has 48 divisors (see below), whose sum is σ = 377083392. Its totient is φ = 37033920.

The previous prime is 135512387. The next prime is 135512431. The reversal of 135512412 is 214215531.

It is a happy number.

It is a super-2 number, since 2×135512412² = 36727227612115488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33139 + ... + 37002.

It is an arithmetic number, because the mean of its divisors is an integer number (7855904).

Almost surely, 2^135512412 is an apocalyptic number.

135512412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

135512412 is an abundant number, since it is smaller than the sum of its proper divisors (241570980).

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

135512412 is a wasteful number, since it uses less digits than its factorization.

135512412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70178 (or 70176 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 135512412 is about 11640.9798556651. The cubic root of 135512412 is about 513.6410106178.

Adding to 135512412 its reverse (214215531), we get a palindrome (349727943).

The spelling of 135512412 in words is "one hundred thirty-five million, five hundred twelve thousand, four hundred twelve".