1190689042 has 4 divisors (see below), whose sum is σ = 1786033566. Its totient is φ = 595344520.

The previous prime is 1190689039. The next prime is 1190689063. The reversal of 1190689042 is 2409860911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2409860911 = 43 ⋅56043277.

It can be written as a sum of positive squares in only one way, i.e., 1177793761 + 12895281 = 34319^2 + 3591^2 .

It is a Smith number, since the sum of its digits (40) 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 = 1190688986 and 1190689004.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 297672259 + ... + 297672262.

Almost surely, 2^1190689042 is an apocalyptic number.

1190689042 is a deficient number, since it is larger than the sum of its proper divisors (595344524).

1190689042 is an equidigital number, since it uses as much as digits as its factorization.

1190689042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595344523.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 1190689042 is about 34506.3623408785. The cubic root of 1190689042 is about 1059.9029939707.

The spelling of 1190689042 in words is "one billion, one hundred ninety million, six hundred eighty-nine thousand, forty-two".