133000144 has 20 divisors (see below), whose sum is σ = 260099424. Its totient is φ = 65877728.

The previous prime is 133000139. The next prime is 133000157. The reversal of 133000144 is 441000331.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 37132 + ... + 40555.

Almost surely, 2^133000144 is an apocalyptic number.

It is an amenable number.

133000144 is a deficient number, since it is larger than the sum of its proper divisors (127099280).

133000144 is a wasteful number, since it uses less digits than its factorization.

133000144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77802 (or 77796 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 133000144 is about 11532.5688378609. The cubic root of 133000144 is about 510.4470564215.

Adding to 133000144 its reverse (441000331), we get a palindrome (574000475).

The spelling of 133000144 in words is "one hundred thirty-three million, one hundred forty-four", and thus it is an aban number.