144220419 has 40 divisors (see below), whose sum is σ = 256945920. Its totient is φ = 78821424.

The previous prime is 144220403. The next prime is 144220429. The reversal of 144220419 is 914022441.

It is a happy number.

144220419 is a `hidden beast` number, since 1 + 442 + 204 + 19 = 666.

It is not a de Polignac number, because 144220419 - 2⁴ = 144220403 is a prime.

It is a super-2 number, since 2×144220419² = 41599058513071122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 144220392 and 144220401.

It is not an unprimeable number, because it can be changed into a prime (144220429) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7512 + ... + 18570.

It is an arithmetic number, because the mean of its divisors is an integer number (6423648).

Almost surely, 2^144220419 is an apocalyptic number.

144220419 is a deficient number, since it is larger than the sum of its proper divisors (112725501).

144220419 is a wasteful number, since it uses less digits than its factorization.

144220419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11101 (or 11092 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 144220419 is about 12009.1806131809. The cubic root of 144220419 is about 524.4155782437.

The spelling of 144220419 in words is "one hundred forty-four million, two hundred twenty thousand, four hundred nineteen".