144246421 has 8 divisors (see below), whose sum is σ = 158753664. Its totient is φ = 129971520.

The previous prime is 144246397. The next prime is 144246433. The reversal of 144246421 is 124642441.

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 144246421 - 2⁷ = 144246293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144246421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144246481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56781 + ... + 59266.

It is an arithmetic number, because the mean of its divisors is an integer number (19844208).

Almost surely, 2^144246421 is an apocalyptic number.

144246421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144246421 is a deficient number, since it is larger than the sum of its proper divisors (14507243).

144246421 is a wasteful number, since it uses less digits than its factorization.

144246421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116171.

The product of its digits is 6144, while the sum is 28.

The square root of 144246421 is about 12010.2631528206. The cubic root of 144246421 is about 524.4470925849.

Adding to 144246421 its reverse (124642441), we get a palindrome (268888862).

The spelling of 144246421 in words is "one hundred forty-four million, two hundred forty-six thousand, four hundred twenty-one".