2040442420 has 12 divisors (see below), whose sum is σ = 4284929124. Its totient is φ = 816176960.

The previous prime is 2040442381. The next prime is 2040442421. The reversal of 2040442420 is 242440402.

It can be written as a sum of positive squares in 2 ways, for example, as 407959204 + 1632483216 = 20198^2 + 40404^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2040442391 and 2040442400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040442421) 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, 51011041 + ... + 51011080.

It is an arithmetic number, because the mean of its divisors is an integer number (357077427).

Almost surely, 2^2040442420 is an apocalyptic number.

2040442420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2040442420 is an abundant number, since it is smaller than the sum of its proper divisors (2244486704).

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

2040442420 is a wasteful number, since it uses less digits than its factorization.

2040442420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102022130 (or 102022128 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 2040442420 is about 45171.2565687518. The cubic root of 2040442420 is about 1268.3568184145.

Adding to 2040442420 its reverse (242440402), we get a palindrome (2282882822).

The spelling of 2040442420 in words is "two billion, forty million, four hundred forty-two thousand, four hundred twenty".