133134440 has 32 divisors (see below), whose sum is σ = 302649480. Its totient is φ = 52703232.

The previous prime is 133134439. The next prime is 133134467. The reversal of 133134440 is 44431331.

It can be written as a sum of positive squares in 4 ways, for example, as 91738084 + 41396356 = 9578^2 + 6434^2 .

It is a super-2 number, since 2×133134440² = 35449558228227200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13277 + ... + 21036.

Almost surely, 2^133134440 is an apocalyptic number.

133134440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133134440 is an abundant number, since it is smaller than the sum of its proper divisors (169515040).

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

133134440 is a wasteful number, since it uses less digits than its factorization.

133134440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34421 (or 34417 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 133134440 is about 11538.3898356746. The cubic root of 133134440 is about 510.6188054532.

Adding to 133134440 its reverse (44431331), we get a palindrome (177565771).

The spelling of 133134440 in words is "one hundred thirty-three million, one hundred thirty-four thousand, four hundred forty".