1242026560 has 28 divisors (see below), whose sum is σ = 2957576508. Its totient is φ = 496810496.

The previous prime is 1242026521. The next prime is 1242026573. The reversal of 1242026560 is 656202421.

It can be written as a sum of positive squares in 2 ways, for example, as 476286976 + 765739584 = 21824^2 + 27672^2 .

It is an unprimeable number.

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, 1940347 + ... + 1940986.

Almost surely, 2^1242026560 is an apocalyptic number.

1242026560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242026560 is an abundant number, since it is smaller than the sum of its proper divisors (1715549948).

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

1242026560 is an equidigital number, since it uses as much as digits as its factorization.

1242026560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3881350 (or 3881340 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1242026560 is about 35242.3971942886. The cubic root of 1242026560 is about 1074.9220235490.

Adding to 1242026560 its reverse (656202421), we get a palindrome (1898228981).

The spelling of 1242026560 in words is "one billion, two hundred forty-two million, twenty-six thousand, five hundred sixty".