2042440434 has 60 divisors (see below), whose sum is σ = 4784413326. Its totient is φ = 651185568.

The previous prime is 2042440427. The next prime is 2042440453. The reversal of 2042440434 is 4340442402.

It is a happy number.

2042440434 is a `hidden beast` number, since 204 + 24 + 4 + 0 + 434 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1372924809 + 669515625 = 37053^2 + 25875^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2042440398 and 2042440407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 73782 + ... + 97614.

Almost surely, 2^2042440434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2042440434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2392206663).

2042440434 is an abundant number, since it is smaller than the sum of its proper divisors (2741972892).

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

2042440434 is a wasteful number, since it uses less digits than its factorization.

2042440434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23893 (or 23861 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

The square root of 2042440434 is about 45193.3671460758. The cubic root of 2042440434 is about 1268.7706776735.

Adding to 2042440434 its reverse (4340442402), we get a palindrome (6382882836).

The spelling of 2042440434 in words is "two billion, forty-two million, four hundred forty thousand, four hundred thirty-four".