144420131 has 4 divisors (see below), whose sum is σ = 144470664. Its totient is φ = 144369600.

The previous prime is 144420091. The next prime is 144420149. The reversal of 144420131 is 131024441.

144420131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144420131 is a prime.

It is a super-2 number, since 2×144420131² = 41714348476114322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144420161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20705 + ... + 26786.

It is an arithmetic number, because the mean of its divisors is an integer number (36117666).

Almost surely, 2^144420131 is an apocalyptic number.

144420131 is a deficient number, since it is larger than the sum of its proper divisors (50533).

144420131 is an equidigital number, since it uses as much as digits as its factorization.

144420131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50532.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 144420131 is about 12017.4927085478. The cubic root of 144420131 is about 524.6575314488.

Adding to 144420131 its reverse (131024441), we get a palindrome (275444572).

The spelling of 144420131 in words is "one hundred forty-four million, four hundred twenty thousand, one hundred thirty-one".