144342442021 has 4 divisors (see below), whose sum is σ = 144373941792. Its totient is φ = 144310942252.

The previous prime is 144342442019. The next prime is 144342442039. The reversal of 144342442021 is 120244243441.

It is a happy number.

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 144342442021 - 2¹ = 144342442019 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 (144342442091) 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, 15743011 + ... + 15752176.

It is an arithmetic number, because the mean of its divisors is an integer number (36093485448).

Almost surely, 2^144342442021 is an apocalyptic number.

It is an amenable number.

144342442021 is a deficient number, since it is larger than the sum of its proper divisors (31499771).

144342442021 is an equidigital number, since it uses as much as digits as its factorization.

144342442021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31499770.

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 144342442021 its reverse (120244243441), we get a palindrome (264586685462).

The spelling of 144342442021 in words is "one hundred forty-four billion, three hundred forty-two million, four hundred forty-two thousand, twenty-one".