1242940160 has 144 divisors (see below), whose sum is σ = 3712165632. Its totient is φ = 387379200.

The previous prime is 1242940147. The next prime is 1242940277. The reversal of 1242940160 is 610492421.

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, 92255 + ... + 104865.

It is an arithmetic number, because the mean of its divisors is an integer number (25778928).

Almost surely, 2^1242940160 is an apocalyptic number.

1242940160 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 1242940160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1856082816).

1242940160 is an abundant number, since it is smaller than the sum of its proper divisors (2469225472).

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

1242940160 is a wasteful number, since it uses less digits than its factorization.

1242940160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12650 (or 12636 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1242940160 is about 35255.3564724568. The cubic root of 1242940160 is about 1075.1855198116.

The spelling of 1242940160 in words is "one billion, two hundred forty-two million, nine hundred forty thousand, one hundred sixty".