2239642 has 4 divisors (see below), whose sum is σ = 3359466. Its totient is φ = 1119820.

The previous prime is 2239639. The next prime is 2239649. The reversal of 2239642 is 2469322.

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., 2070721 + 168921 = 1439^2 + 411^2 .

It is a d-powerful number, because it can be written as 2¹³ + 2¹⁷ + 3⁷ + 9 + 6 + 4⁵ + 2²¹ .

It is a self number, because there is not a number n which added to its sum of digits gives 2239642.

It is not an unprimeable number, because it can be changed into a prime (2239649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559909 + ... + 559912.

2^2239642 is an apocalyptic number.

2239642 is a deficient number, since it is larger than the sum of its proper divisors (1119824).

2239642 is a wasteful number, since it uses less digits than its factorization.

2239642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119823.

The product of its digits is 5184, while the sum is 28.

The square root of 2239642 is about 1496.5433505248. The cubic root of 2239642 is about 130.8356815496.

The spelling of 2239642 in words is "two million, two hundred thirty-nine thousand, six hundred forty-two".