133123145 has 8 divisors (see below), whose sum is σ = 164901120. Its totient is φ = 103062960.

The previous prime is 133123099. The next prime is 133123157. The reversal of 133123145 is 541321331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133123145 - 2⁸ = 133122889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133123145.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429275 + ... + 429584.

It is an arithmetic number, because the mean of its divisors is an integer number (20612640).

Almost surely, 2^133123145 is an apocalyptic number.

It is an amenable number.

133123145 is a deficient number, since it is larger than the sum of its proper divisors (31777975).

133123145 is an equidigital number, since it uses as much as digits as its factorization.

133123145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858895.

The product of its digits is 1080, while the sum is 23.

The square root of 133123145 is about 11537.9003722514. The cubic root of 133123145 is about 510.6043649060.

Adding to 133123145 its reverse (541321331), we get a palindrome (674444476).

The spelling of 133123145 in words is "one hundred thirty-three million, one hundred twenty-three thousand, one hundred forty-five".