144841621 has 4 divisors (see below), whose sum is σ = 144865792. Its totient is φ = 144817452.

The previous prime is 144841597. The next prime is 144841657. The reversal of 144841621 is 126148441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 144841621 - 2¹¹ = 144839573 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 (144841691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4396 + ... + 17578.

It is an arithmetic number, because the mean of its divisors is an integer number (36216448).

Almost surely, 2^144841621 is an apocalyptic number.

It is an amenable number.

144841621 is a deficient number, since it is larger than the sum of its proper divisors (24171).

144841621 is a wasteful number, since it uses less digits than its factorization.

144841621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24170.

The product of its digits is 6144, while the sum is 31.

The square root of 144841621 is about 12035.0164520037. The cubic root of 144841621 is about 525.1674398651.

The spelling of 144841621 in words is "one hundred forty-four million, eight hundred forty-one thousand, six hundred twenty-one".