2642947 has 8 divisors (see below), whose sum is σ = 2761232. Its totient is φ = 2527200.

The previous prime is 2642933. The next prime is 2642971. The reversal of 2642947 is 7492462.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2642947 is a prime.

It is a Duffinian number.

2642947 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2642987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1672 + ... + 2842.

It is an arithmetic number, because the mean of its divisors is an integer number (345154).

2^2642947 is an apocalyptic number.

2642947 is a deficient number, since it is larger than the sum of its proper divisors (118285).

2642947 is a wasteful number, since it uses less digits than its factorization.

2642947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269.

The product of its digits is 24192, while the sum is 34.

The square root of 2642947 is about 1625.7143045443. The cubic root of 2642947 is about 138.2598722876.

The spelling of 2642947 in words is "two million, six hundred forty-two thousand, nine hundred forty-seven".