8424072140 has 96 divisors (see below), whose sum is σ = 19638678528. Its totient is φ = 3009600000.

The previous prime is 8424072133. The next prime is 8424072191. The reversal of 8424072140 is 412704248.

It is a junction number, because it is equal to n+sod(n) for n = 8424072097 and 8424072106.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11069360 + ... + 11070120.

It is an arithmetic number, because the mean of its divisors is an integer number (204569568).

Almost surely, 2^8424072140 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 8424072140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9819339264).

8424072140 is an abundant number, since it is smaller than the sum of its proper divisors (11214606388).

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

8424072140 is a wasteful number, since it uses less digits than its factorization.

8424072140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599 (or 1597 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 32.

The square root of 8424072140 is about 91782.7442387729. The cubic root of 8424072140 is about 2034.7326740064.

Adding to 8424072140 its reverse (412704248), we get a palindrome (8836776388).

The spelling of 8424072140 in words is "eight billion, four hundred twenty-four million, seventy-two thousand, one hundred forty".