8404342542 has 64 divisors (see below), whose sum is σ = 19803110400. Its totient is φ = 2634586560.

The previous prime is 8404342519. The next prime is 8404342543. The reversal of 8404342542 is 2452434048.

8404342542 is a `hidden beast` number, since 84 + 0 + 4 + 34 + 2 + 542 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 8404342497 and 8404342506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8404342543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110667 + ... + 170457.

It is an arithmetic number, because the mean of its divisors is an integer number (309423600).

Almost surely, 2^8404342542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8404342542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9901555200).

8404342542 is an abundant number, since it is smaller than the sum of its proper divisors (11398767858).

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

8404342542 is a wasteful number, since it uses less digits than its factorization.

8404342542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59958 (or 59952 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 36.

The square root of 8404342542 is about 91675.2013469291. The cubic root of 8404342542 is about 2033.1429504151.

The spelling of 8404342542 in words is "eight billion, four hundred four million, three hundred forty-two thousand, five hundred forty-two".