144206121 has 8 divisors (see below), whose sum is σ = 203585184. Its totient is φ = 90482240.

The previous prime is 144206107. The next prime is 144206129. The reversal of 144206121 is 121602441.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 144206121 - 2⁷ = 144205993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144206129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1413735 + ... + 1413836.

It is an arithmetic number, because the mean of its divisors is an integer number (25448148).

Almost surely, 2^144206121 is an apocalyptic number.

It is an amenable number.

144206121 is a deficient number, since it is larger than the sum of its proper divisors (59379063).

144206121 is a wasteful number, since it uses less digits than its factorization.

144206121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2827591.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 144206121 is about 12008.5853038566. The cubic root of 144206121 is about 524.3982474991.

Adding to 144206121 its reverse (121602441), we get a palindrome (265808562).

The spelling of 144206121 in words is "one hundred forty-four million, two hundred six thousand, one hundred twenty-one".