133743240 has 48 divisors (see below), whose sum is σ = 434666700. Its totient is φ = 35664768.

The previous prime is 133743209. The next prime is 133743277. The reversal of 133743240 is 42347331.

133743240 is a `hidden beast` number, since 1 + 337 + 4 + 324 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 133125444 + 617796 = 11538^2 + 786^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185395 + ... + 186114.

Almost surely, 2^133743240 is an apocalyptic number.

133743240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133743240 is an abundant number, since it is smaller than the sum of its proper divisors (300923460).

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

133743240 is a wasteful number, since it uses less digits than its factorization.

133743240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371526 (or 371519 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 133743240 is about 11564.7412422414. The cubic root of 133743240 is about 511.3959449270.

The spelling of 133743240 in words is "one hundred thirty-three million, seven hundred forty-three thousand, two hundred forty".