8420098140 has 144 divisors (see below), whose sum is σ = 27612268320. Its totient is φ = 2069660160.

The previous prime is 8420098123. The next prime is 8420098187. The reversal of 8420098140 is 418900248.

8420098140 is a `hidden beast` number, since 8 + 420 + 0 + 98 + 140 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 8420098095 and 8420098104.

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, 93270 + ... + 159810.

Almost surely, 2^8420098140 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 8420098140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13806134160).

8420098140 is an abundant number, since it is smaller than the sum of its proper divisors (19192170180).

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

8420098140 is a wasteful number, since it uses less digits than its factorization.

8420098140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66612 (or 66607 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 8420098140 is about 91761.0927354290. The cubic root of 8420098140 is about 2034.4126664789.

Adding to 8420098140 its reverse (418900248), we get a palindrome (8838998388).

The spelling of 8420098140 in words is "eight billion, four hundred twenty million, ninety-eight thousand, one hundred forty".