144042121 has 4 divisors (see below), whose sum is σ = 144107392. Its totient is φ = 143976852.

The previous prime is 144042109. The next prime is 144042137. The reversal of 144042121 is 121240441.

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 144042121 - 2⁹ = 144041609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144043121) 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, 29205 + ... + 33778.

It is an arithmetic number, because the mean of its divisors is an integer number (36026848).

Almost surely, 2^144042121 is an apocalyptic number.

It is an amenable number.

144042121 is a deficient number, since it is larger than the sum of its proper divisors (65271).

144042121 is an equidigital number, since it uses as much as digits as its factorization.

144042121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65270.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 144042121 is about 12001.7549133450. The cubic root of 144042121 is about 524.1993795302.

Adding to 144042121 its reverse (121240441), we get a palindrome (265282562).

The spelling of 144042121 in words is "one hundred forty-four million, forty-two thousand, one hundred twenty-one".