1241656040 has 16 divisors (see below), whose sum is σ = 2793726180. Its totient is φ = 496662400.

The previous prime is 1241656033. The next prime is 1241656049. The reversal of 1241656040 is 406561421.

It can be written as a sum of positive squares in 2 ways, for example, as 1176078436 + 65577604 = 34294^2 + 8098^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1241655994 and 1241656012.

It is not an unprimeable number, because it can be changed into a prime (1241656049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15520661 + ... + 15520740.

Almost surely, 2^1241656040 is an apocalyptic number.

1241656040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1241656040 is an abundant number, since it is smaller than the sum of its proper divisors (1552070140).

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

1241656040 is a wasteful number, since it uses less digits than its factorization.

1241656040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31041412 (or 31041408 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1241656040 is about 35237.1400655615. The cubic root of 1241656040 is about 1074.8151230654.

The spelling of 1241656040 in words is "one billion, two hundred forty-one million, six hundred fifty-six thousand, forty".