1661124 has 12 divisors (see below), whose sum is σ = 3875984. Its totient is φ = 553704.

The previous prime is 1661123. The next prime is 1661137. The reversal of 1661124 is 4211661.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1661124.

It is not an unprimeable number, because it can be changed into a prime (1661123) 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, 69202 + ... + 69225.

2^1661124 is an apocalyptic number.

It is an amenable number.

1661124 is an abundant number, since it is smaller than the sum of its proper divisors (2214860).

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

1661124 is a wasteful number, since it uses less digits than its factorization.

1661124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138434 (or 138432 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

The square root of 1661124 is about 1288.8459954548. The cubic root of 1661124 is about 118.4315330244.

Adding to 1661124 its reverse (4211661), we get a palindrome (5872785).

The spelling of 1661124 in words is "one million, six hundred sixty-one thousand, one hundred twenty-four".