1188992042 has 16 divisors (see below), whose sum is σ = 2104023552. Its totient is φ = 493130160.

The previous prime is 1188992023. The next prime is 1188992047. The reversal of 1188992042 is 2402998811.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1188991984 and 1188992002.

It is not an unprimeable number, because it can be changed into a prime (1188992047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1369373 + ... + 1370240.

It is an arithmetic number, because the mean of its divisors is an integer number (131501472).

Almost surely, 2^1188992042 is an apocalyptic number.

1188992042 is a deficient number, since it is larger than the sum of its proper divisors (915031510).

1188992042 is a wasteful number, since it uses less digits than its factorization.

1188992042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2739653.

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 1188992042 is about 34481.7639049977. The cubic root of 1188992042 is about 1059.3992210877.

The spelling of 1188992042 in words is "one billion, one hundred eighty-eight million, nine hundred ninety-two thousand, forty-two".