133142020 has 24 divisors (see below), whose sum is σ = 305016768. Its totient is φ = 48415200.

The previous prime is 133142003. The next prime is 133142033. The reversal of 133142020 is 20241331.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 133141985 and 133142003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302376 + ... + 302815.

It is an arithmetic number, because the mean of its divisors is an integer number (12709032).

Almost surely, 2^133142020 is an apocalyptic number.

133142020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133142020 is an abundant number, since it is smaller than the sum of its proper divisors (171874748).

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

133142020 is a wasteful number, since it uses less digits than its factorization.

133142020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605211 (or 605209 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 133142020 is about 11538.7182997073. The cubic root of 133142020 is about 510.6284959513.

Adding to 133142020 its reverse (20241331), we get a palindrome (153383351).

The spelling of 133142020 in words is "one hundred thirty-three million, one hundred forty-two thousand, twenty".