1040304040 has 32 divisors (see below), whose sum is σ = 2363868360. Its totient is φ = 412000000.

The previous prime is 1040303987. The next prime is 1040304043. The reversal of 1040304040 is 404030401.

It can be written as a sum of positive squares in 4 ways, for example, as 876515236 + 163788804 = 29606^2 + 12798^2 .

It is not an unprimeable number, because it can be changed into a prime (1040304043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124711 + ... + 132790.

Almost surely, 2^1040304040 is an apocalyptic number.

1040304040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040304040 is an abundant number, since it is smaller than the sum of its proper divisors (1323564320).

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

1040304040 is a wasteful number, since it uses less digits than its factorization.

1040304040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257613 (or 257609 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1040304040 is about 32253.7445888070. The cubic root of 1040304040 is about 1013.2581252855.

Adding to 1040304040 its reverse (404030401), we get a palindrome (1444334441).

The spelling of 1040304040 in words is "one billion, forty million, three hundred four thousand, forty".