133240154 has 4 divisors (see below), whose sum is σ = 199860234. Its totient is φ = 66620076.

The previous prime is 133240099. The next prime is 133240157. The reversal of 133240154 is 451042331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 451042331 = 3889 ⋅115979.

It can be written as a sum of positive squares in only one way, i.e., 97515625 + 35724529 = 9875^2 + 5977^2 .

It is not an unprimeable number, because it can be changed into a prime (133240157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33310037 + ... + 33310040.

Almost surely, 2^133240154 is an apocalyptic number.

133240154 is a deficient number, since it is larger than the sum of its proper divisors (66620080).

133240154 is an equidigital number, since it uses as much as digits as its factorization.

133240154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66620079.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 133240154 is about 11542.9698951353. The cubic root of 133240154 is about 510.7539201924.

Adding to 133240154 its reverse (451042331), we get a palindrome (584282485).

The spelling of 133240154 in words is "one hundred thirty-three million, two hundred forty thousand, one hundred fifty-four".