1242710056 has 64 divisors (see below), whose sum is σ = 2824462080. Its totient is φ = 501050880.

The previous prime is 1242710039. The next prime is 1242710071. The reversal of 1242710056 is 6500172421.

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 70660 + ... + 86476.

It is an arithmetic number, because the mean of its divisors is an integer number (44132220).

Almost surely, 2^1242710056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242710056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1412231040).

1242710056 is an abundant number, since it is smaller than the sum of its proper divisors (1581752024).

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

1242710056 is a wasteful number, since it uses less digits than its factorization.

1242710056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15914 (or 15910 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1242710056 is about 35252.0929307750. The cubic root of 1242710056 is about 1075.1191664543.

Adding to 1242710056 its reverse (6500172421), we get a palindrome (7742882477).

The spelling of 1242710056 in words is "one billion, two hundred forty-two million, seven hundred ten thousand, fifty-six".