1129642 has 8 divisors (see below), whose sum is σ = 1726596. Its totient is φ = 554112.

The previous prime is 1129619. The next prime is 1129643. The reversal of 1129642 is 2469211.

It can be written as a sum of positive squares in 2 ways, for example, as 1100401 + 29241 = 1049^2 + 171^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1129643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5223 + ... + 5434.

2^1129642 is an apocalyptic number.

1129642 is a deficient number, since it is larger than the sum of its proper divisors (596954).

1129642 is a wasteful number, since it uses less digits than its factorization.

1129642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10712.

The product of its digits is 864, while the sum is 25.

The square root of 1129642 is about 1062.8461788989. The cubic root of 1129642 is about 104.1470429878.

It can be divided in two parts, 1129 and 642, that added together give a palindrome (1771).

The spelling of 1129642 in words is "one million, one hundred twenty-nine thousand, six hundred forty-two".