144222404 has 6 divisors (see below), whose sum is σ = 252389214. Its totient is φ = 72111200.

The previous prime is 144222401. The next prime is 144222409. The reversal of 144222404 is 404222441.

It can be written as a sum of positive squares in only one way, i.e., 143952004 + 270400 = 11998^2 + 520^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 144222404.

It is not an unprimeable number, because it can be changed into a prime (144222401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18027797 + ... + 18027804.

It is an arithmetic number, because the mean of its divisors is an integer number (42064869).

Almost surely, 2^144222404 is an apocalyptic number.

It is an amenable number.

144222404 is a deficient number, since it is larger than the sum of its proper divisors (108166810).

144222404 is a wasteful number, since it uses less digits than its factorization.

144222404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36055605 (or 36055603 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 144222404 is about 12009.2632580021. The cubic root of 144222404 is about 524.4179841909.

Adding to 144222404 its reverse (404222441), we get a palindrome (548444845).

The spelling of 144222404 in words is "one hundred forty-four million, two hundred twenty-two thousand, four hundred four".