144957121 has 4 divisors (see below), whose sum is σ = 145081044. Its totient is φ = 144833200.

The previous prime is 144957107. The next prime is 144957149. The reversal of 144957121 is 121759441.

144957121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121759441 = 1231 ⋅98911.

It can be written as a sum of positive squares in 2 ways, for example, as 131997121 + 12960000 = 11489^2 + 3600^2 .

It is a cyclic number.

It is not a de Polignac number, because 144957121 - 2²³ = 136568513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144957101) 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, 60190 + ... + 62551.

It is an arithmetic number, because the mean of its divisors is an integer number (36270261).

Almost surely, 2^144957121 is an apocalyptic number.

It is an amenable number.

144957121 is a deficient number, since it is larger than the sum of its proper divisors (123923).

144957121 is a wasteful number, since it uses less digits than its factorization.

144957121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123922.

The product of its digits is 10080, while the sum is 34.

The square root of 144957121 is about 12039.8139935798. The cubic root of 144957121 is about 525.3069962600.

The spelling of 144957121 in words is "one hundred forty-four million, nine hundred fifty-seven thousand, one hundred twenty-one".