2044142421 has 4 divisors (see below), whose sum is σ = 2725523232. Its totient is φ = 1362761612.

The previous prime is 2044142389. The next prime is 2044142437. The reversal of 2044142421 is 1242414402.

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 2044142421 - 2⁵ = 2044142389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2044142391 and 2044142400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2044142461) 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, 340690401 + ... + 340690406.

It is an arithmetic number, because the mean of its divisors is an integer number (681380808).

Almost surely, 2^2044142421 is an apocalyptic number.

It is an amenable number.

2044142421 is a deficient number, since it is larger than the sum of its proper divisors (681380811).

2044142421 is an equidigital number, since it uses as much as digits as its factorization.

2044142421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681380810.

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 2044142421 is about 45212.1932779201. The cubic root of 2044142421 is about 1269.1230064555.

Adding to 2044142421 its reverse (1242414402), we get a palindrome (3286556823).

The spelling of 2044142421 in words is "two billion, forty-four million, one hundred forty-two thousand, four hundred twenty-one".