133241420 has 24 divisors (see below), whose sum is σ = 301331184. Its totient is φ = 49196736.

The previous prime is 133241413. The next prime is 133241443. The reversal of 133241420 is 24142331.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 133241392 and 133241401.

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, 255974 + ... + 256493.

It is an arithmetic number, because the mean of its divisors is an integer number (12555466).

Almost surely, 2^133241420 is an apocalyptic number.

133241420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133241420 is an abundant number, since it is smaller than the sum of its proper divisors (168089764).

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

133241420 is a wasteful number, since it uses less digits than its factorization.

133241420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512489 (or 512487 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 133241420 is about 11543.0247335783. The cubic root of 133241420 is about 510.7555378539.

Adding to 133241420 its reverse (24142331), we get a palindrome (157383751).

The spelling of 133241420 in words is "one hundred thirty-three million, two hundred forty-one thousand, four hundred twenty".