987302421 has 72 divisors (see below), whose sum is σ = 1779822720. Its totient is φ = 523950336.

The previous prime is 987302417. The next prime is 987302429. The reversal of 987302421 is 124203789.

It is not a de Polignac number, because 987302421 - 2² = 987302417 is a prime.

It is a super-2 number, since 2×987302421² = 1949532141024922482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987302429) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 591430 + ... + 593096.

It is an arithmetic number, because the mean of its divisors is an integer number (24719760).

Almost surely, 2^987302421 is an apocalyptic number.

It is an amenable number.

987302421 is a deficient number, since it is larger than the sum of its proper divisors (792520299).

987302421 is a wasteful number, since it uses less digits than its factorization.

987302421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783 (or 1773 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 987302421 is about 31421.3688594243. The cubic root of 987302421 is about 995.7494319366.

The spelling of 987302421 in words is "nine hundred eighty-seven million, three hundred two thousand, four hundred twenty-one".