144202421 has 8 divisors (see below), whose sum is σ = 162386688. Its totient is φ = 126864000.

The previous prime is 144202417. The next prime is 144202427. The reversal of 144202421 is 124202441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144202421 - 2² = 144202417 is a prime.

It is a super-2 number, since 2×144202421² = 41588676444522482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144202393 and 144202402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144202427) 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 7 ways as a sum of consecutive naturals, for example, 211100 + ... + 211781.

It is an arithmetic number, because the mean of its divisors is an integer number (20298336).

Almost surely, 2^144202421 is an apocalyptic number.

144202421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144202421 is a deficient number, since it is larger than the sum of its proper divisors (18184267).

144202421 is a wasteful number, since it uses less digits than its factorization.

144202421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422923.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 144202421 is about 12008.4312464202. The cubic root of 144202421 is about 524.3937625066.

Adding to 144202421 its sum of digits (20), we get a palindrome (144202441).

Adding to 144202421 its reverse (124202441), we get a palindrome (268404862).

The spelling of 144202421 in words is "one hundred forty-four million, two hundred two thousand, four hundred twenty-one".