144063781 has 4 divisors (see below), whose sum is σ = 146505600. Its totient is φ = 141621964.

The previous prime is 144063769. The next prime is 144063809. The reversal of 144063781 is 187360441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 144063781 - 2¹⁷ = 143932709 is a prime.

It is a super-2 number, since 2×144063781² = 41508745992031922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144063701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1220821 + ... + 1220938.

It is an arithmetic number, because the mean of its divisors is an integer number (36626400).

Almost surely, 2^144063781 is an apocalyptic number.

It is an amenable number.

144063781 is a deficient number, since it is larger than the sum of its proper divisors (2441819).

144063781 is an equidigital number, since it uses as much as digits as its factorization.

144063781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441818.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 144063781 is about 12002.6572474598. The cubic root of 144063781 is about 524.2256533021.

The spelling of 144063781 in words is "one hundred forty-four million, sixty-three thousand, seven hundred eighty-one".