133102420 has 36 divisors (see below), whose sum is σ = 307241172. Its totient is φ = 48400000.

The previous prime is 133102399. The next prime is 133102421. The reversal of 133102420 is 24201331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18783556 + 114318864 = 4334^2 + 10692^2 .

It is a junction number, because it is equal to n+sod(n) for n = 133102394 and 133102403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133102421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25081 + ... + 29920.

It is an arithmetic number, because the mean of its divisors is an integer number (8534477).

Almost surely, 2^133102420 is an apocalyptic number.

133102420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133102420 is an abundant number, since it is smaller than the sum of its proper divisors (174138752).

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

133102420 is a wasteful number, since it uses less digits than its factorization.

133102420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55032 (or 55019 counting only the distinct ones).

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

The square root of 133102420 is about 11537.0022102798. The cubic root of 133102420 is about 510.5778660712.

Adding to 133102420 its reverse (24201331), we get a palindrome (157303751).

The spelling of 133102420 in words is "one hundred thirty-three million, one hundred two thousand, four hundred twenty".