1987042 has 8 divisors (see below), whose sum is σ = 3004416. Its totient is φ = 985572.

The previous prime is 1987031. The next prime is 1987043. The reversal of 1987042 is 2407891.

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

It is a junction number, because it is equal to n+sod(n) for n = 1986995 and 1987013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1987043) 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, 3658 + ... + 4165.

It is an arithmetic number, because the mean of its divisors is an integer number (375552).

2^1987042 is an apocalyptic number.

1987042 is a deficient number, since it is larger than the sum of its proper divisors (1017374).

1987042 is a wasteful number, since it uses less digits than its factorization.

1987042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7952.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1987042 is about 1409.6247727676. The cubic root of 1987042 is about 125.7194142683.

The spelling of 1987042 in words is "one million, nine hundred eighty-seven thousand, forty-two".