244142621 has 4 divisors (see below), whose sum is σ = 244880544. Its totient is φ = 243404700.

The previous prime is 244142611. The next prime is 244142681. The reversal of 244142621 is 126241442.

244142621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 244142621 - 2¹⁴ = 244126237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244142611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368465 + ... + 369126.

It is an arithmetic number, because the mean of its divisors is an integer number (61220136).

Almost surely, 2^244142621 is an apocalyptic number.

It is an amenable number.

244142621 is a deficient number, since it is larger than the sum of its proper divisors (737923).

244142621 is an equidigital number, since it uses as much as digits as its factorization.

244142621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737922.

The product of its digits is 3072, while the sum is 26.

The square root of 244142621 is about 15625.0638718695. The cubic root of 244142621 is about 625.0017032487.

The spelling of 244142621 in words is "two hundred forty-four million, one hundred forty-two thousand, six hundred twenty-one".