244142505 has 20 divisors (see below), whose sum is σ = 437648772. Its totient is φ = 130209120.

The previous prime is 244142497. The next prime is 244142567. The reversal of 244142505 is 505241442.

244142505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 102151449 + 141991056 = 10107^2 + 11916^2 .

It is not a de Polignac number, because 244142505 - 2³ = 244142497 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 301006 + ... + 301815.

Almost surely, 2^244142505 is an apocalyptic number.

It is an amenable number.

244142505 is a deficient number, since it is larger than the sum of its proper divisors (193506267).

244142505 is an equidigital number, since it uses as much as digits as its factorization.

244142505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602838 (or 602829 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 244142505 is about 15625.0601598842. The cubic root of 244142505 is about 625.0016042625.

Adding to 244142505 its reverse (505241442), we get a palindrome (749383947).

The spelling of 244142505 in words is "two hundred forty-four million, one hundred forty-two thousand, five hundred five".