144143261 has 8 divisors (see below), whose sum is σ = 147081144. Its totient is φ = 141235200.

The previous prime is 144143257. The next prime is 144143281. The reversal of 144143261 is 162341441.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 72148036 + 71995225 = 8494^2 + 8485^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 144143261 - 2² = 144143257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144143261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144143281) 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, 2441 + ... + 17153.

It is an arithmetic number, because the mean of its divisors is an integer number (18385143).

Almost surely, 2^144143261 is an apocalyptic number.

It is an amenable number.

144143261 is a deficient number, since it is larger than the sum of its proper divisors (2937883).

144143261 is a wasteful number, since it uses less digits than its factorization.

144143261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14911.

The product of its digits is 2304, while the sum is 26.

The square root of 144143261 is about 12005.9677244277. The cubic root of 144143261 is about 524.3220406908.

The spelling of 144143261 in words is "one hundred forty-four million, one hundred forty-three thousand, two hundred sixty-one".