1242235680 has 192 divisors, whose sum is σ = 4487374080. Its totient is φ = 282968064.

The previous prime is 1242235649. The next prime is 1242235691. The reversal of 1242235680 is 865322421.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1535116 + ... + 1535924.

It is an arithmetic number, because the mean of its divisors is an integer number (23371740).

Almost surely, 2^1242235680 is an apocalyptic number.

1242235680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242235680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2243687040).

1242235680 is an abundant number, since it is smaller than the sum of its proper divisors (3245138400).

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

1242235680 is a wasteful number, since it uses less digits than its factorization.

1242235680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291 (or 1283 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 1242235680 is about 35245.3639504545. The cubic root of 1242235680 is about 1074.9823483671.

The spelling of 1242235680 in words is "one billion, two hundred forty-two million, two hundred thirty-five thousand, six hundred eighty".