1012500040 has 16 divisors (see below), whose sum is σ = 2278125180. Its totient is φ = 405000000.

The previous prime is 1012500037. The next prime is 1012500061. The reversal of 1012500040 is 400052101.

It can be written as a sum of positive squares in 2 ways, for example, as 967583236 + 44916804 = 31106^2 + 6702^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12656211 + ... + 12656290.

Almost surely, 2^1012500040 is an apocalyptic number.

1012500040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012500040 is an abundant number, since it is smaller than the sum of its proper divisors (1265625140).

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

1012500040 is a wasteful number, since it uses less digits than its factorization.

1012500040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25312512 (or 25312508 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1012500040 is about 31819.8057819340. The cubic root of 1012500040 is about 1004.1494383466.

Adding to 1012500040 its reverse (400052101), we get a palindrome (1412552141).

The spelling of 1012500040 in words is "one billion, twelve million, five hundred thousand, forty".