44140121 has 2 divisors, whose sum is σ = 44140122. Its totient is φ = 44140120.

The previous prime is 44140099. The next prime is 44140139. The reversal of 44140121 is 12104144.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33512521 + 10627600 = 5789^2 + 3260^2 .

It is a cyclic number.

It is not a de Polignac number, because 44140121 - 2¹⁰ = 44139097 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 44140121.

It is not a weakly prime, because it can be changed into another prime (44140171) 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 as a sum of consecutive naturals, namely, 22070060 + 22070061.

It is an arithmetic number, because the mean of its divisors is an integer number (22070061).

Almost surely, 2^44140121 is an apocalyptic number.

It is an amenable number.

44140121 is a deficient number, since it is larger than the sum of its proper divisors (1).

44140121 is an equidigital number, since it uses as much as digits as its factorization.

44140121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 44140121 is about 6643.8032029855. The cubic root of 44140121 is about 353.4091909238.

Adding to 44140121 its reverse (12104144), we get a palindrome (56244265).

The spelling of 44140121 in words is "forty-four million, one hundred forty thousand, one hundred twenty-one".