144215245 has 8 divisors (see below), whose sum is σ = 177279480. Its totient is φ = 112558080.

The previous prime is 144215243. The next prime is 144215273. The reversal of 144215245 is 542512441.

It can be written as a sum of positive squares in 4 ways, for example, as 3697929 + 140517316 = 1923^2 + 11854^2 .

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

It is not a de Polignac number, because 144215245 - 2¹ = 144215243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144215243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351540 + ... + 351949.

It is an arithmetic number, because the mean of its divisors is an integer number (22159935).

Almost surely, 2^144215245 is an apocalyptic number.

It is an amenable number.

144215245 is a deficient number, since it is larger than the sum of its proper divisors (33064235).

144215245 is an equidigital number, since it uses as much as digits as its factorization.

144215245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703535.

The product of its digits is 6400, while the sum is 28.

The square root of 144215245 is about 12008.9651927216. The cubic root of 144215245 is about 524.4093069203.

Adding to 144215245 its reverse (542512441), we get a palindrome (686727686).

The spelling of 144215245 in words is "one hundred forty-four million, two hundred fifteen thousand, two hundred forty-five".