133142232 has 64 divisors (see below), whose sum is σ = 358473600. Its totient is φ = 41054720.

The previous prime is 133142221. The next prime is 133142267. The reversal of 133142232 is 232241331.

133142232 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 133142199 and 133142208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21307 + ... + 26837.

It is an arithmetic number, because the mean of its divisors is an integer number (5601150).

Almost surely, 2^133142232 is an apocalyptic number.

133142232 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 133142232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179236800).

133142232 is an abundant number, since it is smaller than the sum of its proper divisors (225331368).

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

133142232 is a wasteful number, since it uses less digits than its factorization.

133142232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5616 (or 5612 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 133142232 is about 11538.7274861659. The cubic root of 133142232 is about 510.6287669731.

Adding to 133142232 its reverse (232241331), we get a palindrome (365383563).

Subtracting 133142232 from its reverse (232241331), we obtain a palindrome (99099099).

The spelling of 133142232 in words is "one hundred thirty-three million, one hundred forty-two thousand, two hundred thirty-two".