987342642 has 128 divisors (see below), whose sum is σ = 2667168000. Its totient is φ = 266595840.

The previous prime is 987342641. The next prime is 987342647. The reversal of 987342642 is 246243789.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (987342641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 221734 + ... + 226142.

It is an arithmetic number, because the mean of its divisors is an integer number (20837250).

Almost surely, 2^987342642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 987342642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1333584000).

987342642 is an abundant number, since it is smaller than the sum of its proper divisors (1679825358).

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

987342642 is a wasteful number, since it uses less digits than its factorization.

987342642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4473 (or 4467 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 987342642 is about 31422.0088791280. The cubic root of 987342642 is about 995.7629534586.

The spelling of 987342642 in words is "nine hundred eighty-seven million, three hundred forty-two thousand, six hundred forty-two".