2042987 has 4 divisors (see below), whose sum is σ = 2061840. Its totient is φ = 2024136.

The previous prime is 2042983. The next prime is 2043001. The reversal of 2042987 is 7892402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2042987 - 2² = 2042983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2042981) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9263 + ... + 9480.

It is an arithmetic number, because the mean of its divisors is an integer number (515460).

2^2042987 is an apocalyptic number.

2042987 is a deficient number, since it is larger than the sum of its proper divisors (18853).

2042987 is a wasteful number, since it uses less digits than its factorization.

2042987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18852.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 2042987 is about 1429.3309623737. The cubic root of 2042987 is about 126.8883843775. Note that the first 3 decimals are identical.

The spelling of 2042987 in words is "two million, forty-two thousand, nine hundred eighty-seven".