1242727056 has 80 divisors (see below), whose sum is σ = 3654141120. Its totient is φ = 404133120.

The previous prime is 1242727037. The next prime is 1242727067. The reversal of 1242727056 is 6507272421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1242727056.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17370 + ... + 52793.

It is an arithmetic number, because the mean of its divisors is an integer number (45676764).

Almost surely, 2^1242727056 is an apocalyptic number.

1242727056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1242727056 is an abundant number, since it is smaller than the sum of its proper divisors (2411414064).

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

1242727056 is a wasteful number, since it uses less digits than its factorization.

1242727056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70221 (or 70209 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 1242727056 is about 35252.3340503859. The cubic root of 1242727056 is about 1075.1240688964.

Adding to 1242727056 its reverse (6507272421), we get a palindrome (7749999477).

It can be divided in two parts, 124272 and 7056, that added together give a triangular number (131328 = T₅₁₂).

The spelling of 1242727056 in words is "one billion, two hundred forty-two million, seven hundred twenty-seven thousand, fifty-six".