133740404 has 36 divisors (see below), whose sum is σ = 273169764. Its totient is φ = 57125376.

The previous prime is 133740403. The next prime is 133740407. The reversal of 133740404 is 404047331.

It can be written as a sum of positive squares in 2 ways, for example, as 72931600 + 60808804 = 8540^2 + 7798^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133740403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68222 + ... + 70154.

It is an arithmetic number, because the mean of its divisors is an integer number (7588049).

Almost surely, 2^133740404 is an apocalyptic number.

133740404 is a gapful number since it is divisible by the number (14) 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 133740404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136584882).

133740404 is an abundant number, since it is smaller than the sum of its proper divisors (139429360).

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

133740404 is a wasteful number, since it uses less digits than its factorization.

133740404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304 (or 2295 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 133740404 is about 11564.6186275208. The cubic root of 133740404 is about 511.3923302168.

Adding to 133740404 its reverse (404047331), we get a palindrome (537787735).

The spelling of 133740404 in words is "one hundred thirty-three million, seven hundred forty thousand, four hundred four".