133330420 has 24 divisors (see below), whose sum is σ = 280620648. Its totient is φ = 53212800.

The previous prime is 133330397. The next prime is 133330423. The reversal of 133330420 is 24033331.

It can be written as a sum of positive squares in 4 ways, for example, as 343396 + 132987024 = 586^2 + 11532^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133330423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1990 + ... + 16450.

It is an arithmetic number, because the mean of its divisors is an integer number (11692527).

Almost surely, 2^133330420 is an apocalyptic number.

133330420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133330420 is an abundant number, since it is smaller than the sum of its proper divisors (147290228).

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

133330420 is a wasteful number, since it uses less digits than its factorization.

133330420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14931 (or 14929 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 133330420 is about 11546.8792320696. The cubic root of 133330420 is about 510.8692340439.

Adding to 133330420 its reverse (24033331), we get a palindrome (157363751).

The spelling of 133330420 in words is "one hundred thirty-three million, three hundred thirty thousand, four hundred twenty".