133325420 has 48 divisors (see below), whose sum is σ = 290304000. Its totient is φ = 51380160.

The previous prime is 133325419. The next prime is 133325447. The reversal of 133325420 is 24523331.

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, 222281 + ... + 222879.

It is an arithmetic number, because the mean of its divisors is an integer number (6048000).

Almost surely, 2^133325420 is an apocalyptic number.

133325420 is a gapful number since it is divisible by the number (10) 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 133325420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145152000).

133325420 is an abundant number, since it is smaller than the sum of its proper divisors (156978580).

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

133325420 is a wasteful number, since it uses less digits than its factorization.

133325420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998 (or 996 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 133325420 is about 11546.6627213234. The cubic root of 133325420 is about 510.8628479591.

Adding to 133325420 its reverse (24523331), we get a palindrome (157848751).

The spelling of 133325420 in words is "one hundred thirty-three million, three hundred twenty-five thousand, four hundred twenty".