1189742 has 16 divisors (see below), whose sum is σ = 1900800. Its totient is φ = 556920.

The previous prime is 1189717. The next prime is 1189751. The reversal of 1189742 is 2479811.

It is a junction number, because it is equal to n+sod(n) for n = 1189699 and 1189708.

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 7 ways as a sum of consecutive naturals, for example, 4859 + ... + 5097.

It is an arithmetic number, because the mean of its divisors is an integer number (118800).

2^1189742 is an apocalyptic number.

1189742 is a deficient number, since it is larger than the sum of its proper divisors (711058).

1189742 is a wasteful number, since it uses less digits than its factorization.

1189742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391.

The product of its digits is 4032, while the sum is 32.

The square root of 1189742 is about 1090.7529509472. The cubic root of 1189742 is about 105.9621913336.

The spelling of 1189742 in words is "one million, one hundred eighty-nine thousand, seven hundred forty-two".