84240400140 has 240 divisors, whose sum is σ = 288028163808. Its totient is φ = 20485840896.

The previous prime is 84240400129. The next prime is 84240400159. The reversal of 84240400140 is 4100404248.

It is a happy number.

84240400140 is a `hidden beast` number, since 8 + 4 + 240 + 400 + 14 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1723884 + ... + 1772076.

Almost surely, 2^84240400140 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 84240400140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144014081904).

84240400140 is an abundant number, since it is smaller than the sum of its proper divisors (203787763668).

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

84240400140 is a wasteful number, since it uses less digits than its factorization.

84240400140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48310 (or 48299 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 84240400140 its reverse (4100404248), we get a palindrome (88340804388).

The spelling of 84240400140 in words is "eighty-four billion, two hundred forty million, four hundred thousand, one hundred forty".