987842100 has 144 divisors (see below), whose sum is σ = 3298899968. Its totient is φ = 223551360.

The previous prime is 987842077. The next prime is 987842123. The reversal of 987842100 is 1248789.

It is an interprime number because it is at equal distance from previous prime (987842077) and next prime (987842123).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 214017 + ... + 218583.

Almost surely, 2^987842100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 987842100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1649449984).

987842100 is an abundant number, since it is smaller than the sum of its proper divisors (2311057868).

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

987842100 is a wasteful number, since it uses less digits than its factorization.

987842100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4694 (or 4687 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 987842100 is about 31429.9554565386. The cubic root of 987842100 is about 995.9308309895.

The spelling of 987842100 in words is "nine hundred eighty-seven million, eight hundred forty-two thousand, one hundred".