2087842 has 4 divisors (see below), whose sum is σ = 3131766. Its totient is φ = 1043920.

The previous prime is 2087837. The next prime is 2087857. The reversal of 2087842 is 2487802.

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., 1610361 + 477481 = 1269^2 + 691^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521959 + ... + 521962.

2^2087842 is an apocalyptic number.

2087842 is a deficient number, since it is larger than the sum of its proper divisors (1043924).

2087842 is a wasteful number, since it uses less digits than its factorization.

2087842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043923.

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 2087842 is about 1444.9366768132. The cubic root of 2087842 is about 127.8103065822.

The spelling of 2087842 in words is "two million, eighty-seven thousand, eight hundred forty-two".