1242938080 has 96 divisors (see below), whose sum is σ = 2987712000. Its totient is φ = 488581632.

The previous prime is 1242938069. The next prime is 1242938107. The reversal of 1242938080 is 808392421.

It is a congruent number.

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, 3279331 + ... + 3279709.

It is an arithmetic number, because the mean of its divisors is an integer number (31122000).

Almost surely, 2^1242938080 is an apocalyptic number.

1242938080 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 1242938080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1493856000).

1242938080 is an abundant number, since it is smaller than the sum of its proper divisors (1744773920).

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

1242938080 is a wasteful number, since it uses less digits than its factorization.

1242938080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696 (or 688 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 1242938080 is about 35255.3269733809. The cubic root of 1242938080 is about 1075.1849200544.

The spelling of 1242938080 in words is "one billion, two hundred forty-two million, nine hundred thirty-eight thousand, eighty".