1216734742 has 8 divisors (see below), whose sum is σ = 1826760096. Its totient is φ = 607814712.

The previous prime is 1216734733. The next prime is 1216734821. The reversal of 1216734742 is 2474376121.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 273573 + ... + 277984.

It is an arithmetic number, because the mean of its divisors is an integer number (228345012).

Almost surely, 2^1216734742 is an apocalyptic number.

1216734742 is a deficient number, since it is larger than the sum of its proper divisors (610025354).

1216734742 is a wasteful number, since it uses less digits than its factorization.

1216734742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552662.

The product of its digits is 56448, while the sum is 37.

The square root of 1216734742 is about 34881.7250433519. The cubic root of 1216734742 is about 1067.5755928238.

The spelling of 1216734742 in words is "one billion, two hundred sixteen million, seven hundred thirty-four thousand, seven hundred forty-two".