2011642 has 4 divisors (see below), whose sum is σ = 3017466. Its totient is φ = 1005820.

The previous prime is 2011637. The next prime is 2011657. The reversal of 2011642 is 2461102.

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., 1962801 + 48841 = 1401^2 + 221^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502909 + ... + 502912.

2^2011642 is an apocalyptic number.

2011642 is a deficient number, since it is larger than the sum of its proper divisors (1005824).

2011642 is a wasteful number, since it uses less digits than its factorization.

2011642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005823.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2011642 is about 1418.3236584081. The cubic root of 2011642 is about 126.2360988517.

Adding to 2011642 its reverse (2461102), we get a palindrome (4472744).

The spelling of 2011642 in words is "two million, eleven thousand, six hundred forty-two".