1139742066 has 8 divisors (see below), whose sum is σ = 2279484144. Its totient is φ = 379914020.

The previous prime is 1139742061. The next prime is 1139742089. The reversal of 1139742066 is 6602479311.

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

1139742066 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1139742061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94978500 + ... + 94978511.

It is an arithmetic number, because the mean of its divisors is an integer number (284935518).

Almost surely, 2^1139742066 is an apocalyptic number.

1139742066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1139742066 is a wasteful number, since it uses less digits than its factorization.

1139742066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189957016.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 1139742066 is about 33760.0661433001. The cubic root of 1139742066 is about 1044.5651345677.

The spelling of 1139742066 in words is "one billion, one hundred thirty-nine million, seven hundred forty-two thousand, sixty-six".