133244442420 has 96 divisors (see below), whose sum is σ = 391647191040. Its totient is φ = 33802826880.

The previous prime is 133244442403. The next prime is 133244442433. The reversal of 133244442420 is 24244442331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 497352 + ... + 716831.

It is an arithmetic number, because the mean of its divisors is an integer number (4079658240).

Almost surely, 2^133244442420 is an apocalyptic number.

133244442420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133244442420 is an abundant number, since it is smaller than the sum of its proper divisors (258402748620).

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

133244442420 is a wasteful number, since it uses less digits than its factorization.

133244442420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214285 (or 1214283 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 33.

Adding to 133244442420 its reverse (24244442331), we get a palindrome (157488884751).

The spelling of 133244442420 in words is "one hundred thirty-three billion, two hundred forty-four million, four hundred forty-two thousand, four hundred twenty".