144425621 has 8 divisors (see below), whose sum is σ = 149273088. Its totient is φ = 139590000.

The previous prime is 144425599. The next prime is 144425627. The reversal of 144425621 is 126524441.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144425621 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 (144425627) 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, 26696 + ... + 31646.

It is an arithmetic number, because the mean of its divisors is an integer number (18659136).

Almost surely, 2^144425621 is an apocalyptic number.

It is an amenable number.

144425621 is a deficient number, since it is larger than the sum of its proper divisors (4847467).

144425621 is an equidigital number, since it uses as much as digits as its factorization.

144425621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5923.

The product of its digits is 7680, while the sum is 29.

The square root of 144425621 is about 12017.7211234077. The cubic root of 144425621 is about 524.6641794910.

The spelling of 144425621 in words is "one hundred forty-four million, four hundred twenty-five thousand, six hundred twenty-one".