144402133 has 4 divisors (see below), whose sum is σ = 145032940. Its totient is φ = 143771328.

The previous prime is 144402121. The next prime is 144402169. The reversal of 144402133 is 331204441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53904964 + 90497169 = 7342^2 + 9513^2 .

It is a cyclic number.

It is not a de Polignac number, because 144402133 - 2¹³ = 144393941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144402113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315060 + ... + 315517.

It is an arithmetic number, because the mean of its divisors is an integer number (36258235).

Almost surely, 2^144402133 is an apocalyptic number.

It is an amenable number.

144402133 is a deficient number, since it is larger than the sum of its proper divisors (630807).

144402133 is an equidigital number, since it uses as much as digits as its factorization.

144402133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630806.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 144402133 is about 12016.7438601312. The cubic root of 144402133 is about 524.6357358296.

Adding to 144402133 its reverse (331204441), we get a palindrome (475606574).

The spelling of 144402133 in words is "one hundred forty-four million, four hundred two thousand, one hundred thirty-three".