144545146 has 4 divisors (see below), whose sum is σ = 216817722. Its totient is φ = 72272572.

The previous prime is 144545143. The next prime is 144545161. The reversal of 144545146 is 641545441.

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

It can be written as a sum of positive squares in only one way, i.e., 141871921 + 2673225 = 11911^2 + 1635^2 .

It is a super-3 number, since 3×144545146³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (144545143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36136285 + ... + 36136288.

Almost surely, 2^144545146 is an apocalyptic number.

144545146 is a deficient number, since it is larger than the sum of its proper divisors (72272576).

144545146 is an equidigital number, since it uses as much as digits as its factorization.

144545146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72272575.

The product of its digits is 38400, while the sum is 34.

The square root of 144545146 is about 12022.6929595661. The cubic root of 144545146 is about 524.8088749498.

It can be divided in two parts, 14454 and 5146, that added together give a square (19600 = 140²).

The spelling of 144545146 in words is "one hundred forty-four million, five hundred forty-five thousand, one hundred forty-six".