642897241082 has 8 divisors (see below), whose sum is σ = 964350127776. Its totient is φ = 321447198492.

The previous prime is 642897241069. The next prime is 642897241093. The reversal of 642897241082 is 280142798246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×642897241082³ (a number of 36 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6158 + ... + 1133945.

It is an arithmetic number, because the mean of its divisors is an integer number (120543765972).

Almost surely, 2^642897241082 is an apocalyptic number.

642897241082 is a deficient number, since it is larger than the sum of its proper divisors (321452886694).

642897241082 is a wasteful number, since it uses less digits than its factorization.

642897241082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422052.

The product of its (nonzero) digits is 3096576, while the sum is 53.

The spelling of 642897241082 in words is "six hundred forty-two billion, eight hundred ninety-seven million, two hundred forty-one thousand, eighty-two".