244120421305 has 16 divisors (see below), whose sum is σ = 298681091280. Its totient is φ = 191477115648.

The previous prime is 244120421267. The next prime is 244120421309. The reversal of 244120421305 is 503124021442.

It can be written as a sum of positive squares in 8 ways, for example, as 5152942656 + 238967478649 = 71784^2 + 488843^2 .

It is a cyclic number.

It is not a de Polignac number, because 244120421305 - 2¹⁵ = 244120388537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (244120421309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56359 + ... + 701011.

It is an arithmetic number, because the mean of its divisors is an integer number (18667568205).

Almost surely, 2^244120421305 is an apocalyptic number.

It is an amenable number.

244120421305 is a deficient number, since it is larger than the sum of its proper divisors (54560669975).

244120421305 is a wasteful number, since it uses less digits than its factorization.

244120421305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646140.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 244120421305 its reverse (503124021442), we get a palindrome (747244442747).

The spelling of 244120421305 in words is "two hundred forty-four billion, one hundred twenty million, four hundred twenty-one thousand, three hundred five".