144263722 has 4 divisors (see below), whose sum is σ = 216395586. Its totient is φ = 72131860.

The previous prime is 144263681. The next prime is 144263723. The reversal of 144263722 is 227362441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 227362441 = 113 ⋅2012057.

It can be written as a sum of positive squares in only one way, i.e., 94264681 + 49999041 = 9709^2 + 7071^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (144263723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36065929 + ... + 36065932.

Almost surely, 2^144263722 is an apocalyptic number.

144263722 is a deficient number, since it is larger than the sum of its proper divisors (72131864).

144263722 is an equidigital number, since it uses as much as digits as its factorization.

144263722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72131863.

The product of its digits is 16128, while the sum is 31.

The square root of 144263722 is about 12010.9833902141. The cubic root of 144263722 is about 524.4680592435.

The spelling of 144263722 in words is "one hundred forty-four million, two hundred sixty-three thousand, seven hundred twenty-two".