244134021 has 16 divisors (see below), whose sum is σ = 353699840. Its totient is φ = 149214960.

The previous prime is 244134019. The next prime is 244134041. The reversal of 244134021 is 120431442.

It is not a de Polignac number, because 244134021 - 2¹ = 244134019 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 (244134041) 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, 67315 + ... + 70848.

It is an arithmetic number, because the mean of its divisors is an integer number (22106240).

Almost surely, 2^244134021 is an apocalyptic number.

It is an amenable number.

244134021 is a deficient number, since it is larger than the sum of its proper divisors (109565819).

244134021 is a wasteful number, since it uses less digits than its factorization.

244134021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138216.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 244134021 is about 15624.7886705709. The cubic root of 244134021 is about 624.9943645359.

Adding to 244134021 its reverse (120431442), we get a palindrome (364565463).

The spelling of 244134021 in words is "two hundred forty-four million, one hundred thirty-four thousand, twenty-one".