144302021 has 4 divisors (see below), whose sum is σ = 144428544. Its totient is φ = 144175500.

The previous prime is 144301991. The next prime is 144302063. The reversal of 144302021 is 120203441.

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.

It is a cyclic number.

It is not a de Polignac number, because 144302021 - 2¹⁰ = 144300997 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 (144362021) 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, 61535 + ... + 63836.

It is an arithmetic number, because the mean of its divisors is an integer number (36107136).

Almost surely, 2^144302021 is an apocalyptic number.

It is an amenable number.

144302021 is a deficient number, since it is larger than the sum of its proper divisors (126523).

144302021 is a wasteful number, since it uses less digits than its factorization.

144302021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126522.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 144302021 is about 12012.5776168148. The cubic root of 144302021 is about 524.5144669027.

Adding to 144302021 its reverse (120203441), we get a palindrome (264505462).

The spelling of 144302021 in words is "one hundred forty-four million, three hundred two thousand, twenty-one".