133744122 has 80 divisors (see below), whose sum is σ = 314337672. Its totient is φ = 42456960.

The previous prime is 133744111. The next prime is 133744123. The reversal of 133744122 is 221447331.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 112593321 + 21150801 = 10611^2 + 4599^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (133744123) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 317472 + ... + 317892.

Almost surely, 2^133744122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133744122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157168836).

133744122 is an abundant number, since it is smaller than the sum of its proper divisors (180593550).

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

133744122 is a wasteful number, since it uses less digits than its factorization.

133744122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525 (or 516 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 133744122 is about 11564.7793753275. The cubic root of 133744122 is about 511.3970690966.

The spelling of 133744122 in words is "one hundred thirty-three million, seven hundred forty-four thousand, one hundred twenty-two".