244140121 has 4 divisors (see below), whose sum is σ = 244305792. Its totient is φ = 243974452.

The previous prime is 244140119. The next prime is 244140151. The reversal of 244140121 is 121041442.

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, and also an emirpimes, since its reverse is a distinct semiprime: 121041442 = 2 ⋅60520721.

It is a cyclic number.

It is not a de Polignac number, because 244140121 - 2¹ = 244140119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (244140151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80605 + ... + 83578.

It is an arithmetic number, because the mean of its divisors is an integer number (61076448).

Almost surely, 2^244140121 is an apocalyptic number.

It is an amenable number.

244140121 is a deficient number, since it is larger than the sum of its proper divisors (165671).

244140121 is a wasteful number, since it uses less digits than its factorization.

244140121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165670.

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

The square root of 244140121 is about 15624.9838719917. The cubic root of 244140121 is about 624.9995699197. Note that the first 3 decimals are identical.

Adding to 244140121 its reverse (121041442), we get a palindrome (365181563).

The spelling of 244140121 in words is "two hundred forty-four million, one hundred forty thousand, one hundred twenty-one".