1040424020 has 12 divisors (see below), whose sum is σ = 2184890484. Its totient is φ = 416169600.

The previous prime is 1040424017. The next prime is 1040424029. The reversal of 1040424020 is 204240401.

It can be written as a sum of positive squares in 2 ways, for example, as 113465104 + 926958916 = 10652^2 + 30446^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1040424020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040424029) 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, 26010581 + ... + 26010620.

It is an arithmetic number, because the mean of its divisors is an integer number (182074207).

Almost surely, 2^1040424020 is an apocalyptic number.

1040424020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040424020 is an abundant number, since it is smaller than the sum of its proper divisors (1144466464).

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

1040424020 is a wasteful number, since it uses less digits than its factorization.

1040424020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52021210 (or 52021208 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 1040424020 is about 32255.6044742615. The cubic root of 1040424020 is about 1013.2970773713.

Adding to 1040424020 its reverse (204240401), we get a palindrome (1244664421).

The spelling of 1040424020 in words is "one billion, forty million, four hundred twenty-four thousand, twenty".