2042444440 has 16 divisors (see below), whose sum is σ = 4595500080. Its totient is φ = 816977760.

The previous prime is 2042444431. The next prime is 2042444461. The reversal of 2042444440 is 444442402.

It is a junction number, because it is equal to n+sod(n) for n = 2042444399 and 2042444408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25530516 + ... + 25530595.

It is an arithmetic number, because the mean of its divisors is an integer number (287218755).

Almost surely, 2^2042444440 is an apocalyptic number.

2042444440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2042444440 is an abundant number, since it is smaller than the sum of its proper divisors (2553055640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2042444440 is a wasteful number, since it uses less digits than its factorization.

2042444440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51061122 (or 51061118 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

The square root of 2042444440 is about 45193.4114667171. The cubic root of 2042444440 is about 1268.7715071864.

Adding to 2042444440 its reverse (444442402), we get a palindrome (2486886842).

The spelling of 2042444440 in words is "two billion, forty-two million, four hundred forty-four thousand, four hundred forty".