1242009296 has 80 divisors (see below), whose sum is σ = 2724254208. Its totient is φ = 543436800.

The previous prime is 1242009283. The next prime is 1242009311. The reversal of 1242009296 is 6929002421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1270760 + ... + 1271736.

Almost surely, 2^1242009296 is an apocalyptic number.

1242009296 is a gapful number since it is divisible by the number (16) 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 1242009296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1362127104).

1242009296 is an abundant number, since it is smaller than the sum of its proper divisors (1482244912).

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

1242009296 is a wasteful number, since it uses less digits than its factorization.

1242009296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260 (or 1254 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 1242009296 is about 35242.1522611772. The cubic root of 1242009296 is about 1074.9170431027.

The spelling of 1242009296 in words is "one billion, two hundred forty-two million, nine thousand, two hundred ninety-six".