1987242 has 8 divisors (see below), whose sum is σ = 3974496. Its totient is φ = 662412.

The previous prime is 1987241. The next prime is 1987247. The reversal of 1987242 is 2427891.

It is a happy number.

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

1987242 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1987241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165598 + ... + 165609.

It is an arithmetic number, because the mean of its divisors is an integer number (496812).

2^1987242 is an apocalyptic number.

1987242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1987242 is a wasteful number, since it uses less digits than its factorization.

1987242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331212.

The product of its digits is 8064, while the sum is 33.

The square root of 1987242 is about 1409.6957118471. The cubic root of 1987242 is about 125.7236321022.

The spelling of 1987242 in words is "one million, nine hundred eighty-seven thousand, two hundred forty-two".