1218056742 has 48 divisors (see below), whose sum is σ = 3047265312. Its totient is φ = 344424960.

The previous prime is 1218056737. The next prime is 1218056771. The reversal of 1218056742 is 2476508121.

1218056742 is a `hidden beast` number, since 12 + 1 + 80 + 567 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1218056697 and 1218056706.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37609 + ... + 62052.

It is an arithmetic number, because the mean of its divisors is an integer number (63484694).

Almost surely, 2^1218056742 is an apocalyptic number.

1218056742 is an abundant number, since it is smaller than the sum of its proper divisors (1829208570).

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

1218056742 is a wasteful number, since it uses less digits than its factorization.

1218056742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99773 (or 99770 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 1218056742 is about 34900.6696497359. The cubic root of 1218056742 is about 1067.9620983477.

The spelling of 1218056742 in words is "one billion, two hundred eighteen million, fifty-six thousand, seven hundred forty-two".