2887942 has 4 divisors (see below), whose sum is σ = 4331916. Its totient is φ = 1443970.

The previous prime is 2887939. The next prime is 2887979. The reversal of 2887942 is 2497882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2497882 = 2 ⋅1248941.

It is a junction number, because it is equal to n+sod(n) for n = 2887895 and 2887904.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 721984 + ... + 721987.

It is an arithmetic number, because the mean of its divisors is an integer number (1082979).

2^2887942 is an apocalyptic number.

2887942 is a deficient number, since it is larger than the sum of its proper divisors (1443974).

2887942 is a wasteful number, since it uses less digits than its factorization.

2887942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443973.

The product of its digits is 64512, while the sum is 40.

The square root of 2887942 is about 1699.3945980849. The cubic root of 2887942 is about 142.4063938445.

The spelling of 2887942 in words is "two million, eight hundred eighty-seven thousand, nine hundred forty-two".