1242216339 has 16 divisors (see below), whose sum is σ = 2038509312. Its totient is φ = 655234848.

The previous prime is 1242216323. The next prime is 1242216403. The reversal of 1242216339 is 9336122421.

It is not a de Polignac number, because 1242216339 - 2⁴ = 1242216323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242212339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2274849 + ... + 2275394.

It is an arithmetic number, because the mean of its divisors is an integer number (127406832).

Almost surely, 2^1242216339 is an apocalyptic number.

1242216339 is a deficient number, since it is larger than the sum of its proper divisors (796292973).

1242216339 is a wasteful number, since it uses less digits than its factorization.

1242216339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4550266.

The product of its digits is 15552, while the sum is 33.

The square root of 1242216339 is about 35245.0895728753. The cubic root of 1242216339 is about 1074.9767693556.

The spelling of 1242216339 in words is "one billion, two hundred forty-two million, two hundred sixteen thousand, three hundred thirty-nine".