2013642 has 12 divisors (see below), whose sum is σ = 4362930. Its totient is φ = 671208.

The previous prime is 2013619. The next prime is 2013653. The reversal of 2013642 is 2463102.

It is a happy number.

2013642 is a `hidden beast` number, since 20 + 1 + 3 + 642 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2013561 + 81 = 1419^2 + 9^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 111869 = 2013642 / (2 + 0 + 1 + 3 + 6 + 4 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55917 + ... + 55952.

2^2013642 is an apocalyptic number.

2013642 is an abundant number, since it is smaller than the sum of its proper divisors (2349288).

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

2013642 is a wasteful number, since it uses less digits than its factorization.

2013642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111877 (or 111874 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2013642 is about 1419.0285409392. The cubic root of 2013642 is about 126.2779201721.

Adding to 2013642 its reverse (2463102), we get a palindrome (4476744).

The spelling of 2013642 in words is "two million, thirteen thousand, six hundred forty-two".