1218242742 has 16 divisors (see below), whose sum is σ = 2443511232. Its totient is φ = 404909960.

The previous prime is 1218242719. The next prime is 1218242803. The reversal of 1218242742 is 2472428121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290484 + ... + 294647.

It is an arithmetic number, because the mean of its divisors is an integer number (152719452).

Almost surely, 2^1218242742 is an apocalyptic number.

1218242742 is an abundant number, since it is smaller than the sum of its proper divisors (1225268490).

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

1218242742 is a wasteful number, since it uses less digits than its factorization.

1218242742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585483.

The product of its digits is 14336, while the sum is 33.

The square root of 1218242742 is about 34903.3342533346. The cubic root of 1218242742 is about 1068.0164556513.

The spelling of 1218242742 in words is "one billion, two hundred eighteen million, two hundred forty-two thousand, seven hundred forty-two".