133104420 has 36 divisors (see below), whose sum is σ = 403750620. Its totient is φ = 35494464.

The previous prime is 133104353. The next prime is 133104451. The reversal of 133104420 is 24401331.

It can be written as a sum of positive squares in 2 ways, for example, as 19554084 + 113550336 = 4422^2 + 10656^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 133104393 and 133104402.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 369555 + ... + 369914.

It is an arithmetic number, because the mean of its divisors is an integer number (11215295).

Almost surely, 2^133104420 is an apocalyptic number.

133104420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133104420 is an abundant number, since it is smaller than the sum of its proper divisors (270646200).

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

133104420 is a wasteful number, since it uses less digits than its factorization.

133104420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739484 (or 739479 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 133104420 is about 11537.0888875834. The cubic root of 133104420 is about 510.5804233766.

Adding to 133104420 its reverse (24401331), we get a palindrome (157505751).

The spelling of 133104420 in words is "one hundred thirty-three million, one hundred four thousand, four hundred twenty".