244129021 has 4 divisors (see below), whose sum is σ = 245356000. Its totient is φ = 242902044.

The previous prime is 244129003. The next prime is 244129031. The reversal of 244129021 is 120921442.

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.

It is a cyclic number.

It is not a de Polignac number, because 244129021 - 2²¹ = 242031869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244129001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 613191 + ... + 613588.

It is an arithmetic number, because the mean of its divisors is an integer number (61339000).

Almost surely, 2^244129021 is an apocalyptic number.

It is an amenable number.

244129021 is a deficient number, since it is larger than the sum of its proper divisors (1226979).

244129021 is a wasteful number, since it uses less digits than its factorization.

244129021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226978.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 244129021 is about 15624.6286675876. The cubic root of 244129021 is about 624.9900977631.

It can be divided in two parts, 24412 and 9021, that added together give a palindrome (33433).

The spelling of 244129021 in words is "two hundred forty-four million, one hundred twenty-nine thousand, twenty-one".