1109642 has 4 divisors (see below), whose sum is σ = 1664466. Its totient is φ = 554820.

The previous prime is 1109639. The next prime is 1109653. The reversal of 1109642 is 2469011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1104601 + 5041 = 1051^2 + 71^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277409 + ... + 277412.

2^1109642 is an apocalyptic number.

1109642 is a deficient number, since it is larger than the sum of its proper divisors (554824).

1109642 is an equidigital number, since it uses as much as digits as its factorization.

1109642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554823.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1109642 is about 1053.3954623027. The cubic root of 1109642 is about 103.5287480334.

The spelling of 1109642 in words is "one million, one hundred nine thousand, six hundred forty-two".