144426621 has 8 divisors (see below), whose sum is σ = 192754240. Its totient is φ = 96191712.

The previous prime is 144426617. The next prime is 144426649. The reversal of 144426621 is 126624441.

It is a happy number.

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

It is not a de Polignac number, because 144426621 - 2² = 144426617 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144426671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19456 + ... + 25833.

It is an arithmetic number, because the mean of its divisors is an integer number (24094280).

Almost surely, 2^144426621 is an apocalyptic number.

It is an amenable number.

144426621 is a deficient number, since it is larger than the sum of its proper divisors (48327619).

144426621 is a wasteful number, since it uses less digits than its factorization.

144426621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46355.

The product of its digits is 9216, while the sum is 30.

The square root of 144426621 is about 12017.7627285614. The cubic root of 144426621 is about 524.6653904095.

The spelling of 144426621 in words is "one hundred forty-four million, four hundred twenty-six thousand, six hundred twenty-one".