1020440424 has 16 divisors (see below), whose sum is σ = 2551101120. Its totient is φ = 340146800.

The previous prime is 1020440413. The next prime is 1020440437. The reversal of 1020440424 is 4240440201.

It is a self number, because there is not a number n which added to its sum of digits gives 1020440424.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21259152 + ... + 21259199.

It is an arithmetic number, because the mean of its divisors is an integer number (159443820).

Almost surely, 2^1020440424 is an apocalyptic number.

It is an amenable number.

1020440424 is an abundant number, since it is smaller than the sum of its proper divisors (1530660696).

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

1020440424 is a wasteful number, since it uses less digits than its factorization.

1020440424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42518360 (or 42518356 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 1020440424 is about 31944.3332063764. Note that the first 3 decimals coincide. The cubic root of 1020440424 is about 1006.7675713267.

Adding to 1020440424 its reverse (4240440201), we get a palindrome (5260880625).

The spelling of 1020440424 in words is "one billion, twenty million, four hundred forty thousand, four hundred twenty-four".