642014341386 has 64 divisors (see below), whose sum is σ = 1476213742080. Its totient is φ = 184093957440.

The previous prime is 642014341369. The next prime is 642014341393. The reversal of 642014341386 is 683143410246.

It is a happy number.

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, 769561 + ... + 1369763.

It is an arithmetic number, because the mean of its divisors is an integer number (23065839720).

Almost surely, 2^642014341386 is an apocalyptic number.

642014341386 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 642014341386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (738106871040).

642014341386 is an abundant number, since it is smaller than the sum of its proper divisors (834199400694).

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

642014341386 is a wasteful number, since it uses less digits than its factorization.

642014341386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601091.

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 642014341386 in words is "six hundred forty-two billion, fourteen million, three hundred forty-one thousand, three hundred eighty-six".