642424424246 has 8 divisors (see below), whose sum is σ = 1051239966984. Its totient is φ = 292011101920.

The previous prime is 642424424189. The next prime is 642424424263.

642424424246 is nontrivially palindromic in base 10.

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

It is a junction number, because it is equal to n+sod(n) for n = 642424424197 and 642424424206.

It is a congruent number.

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, 14600555075 + ... + 14600555118.

It is an arithmetic number, because the mean of its divisors is an integer number (131404995873).

Almost surely, 2^642424424246 is an apocalyptic number.

642424424246 is a deficient number, since it is larger than the sum of its proper divisors (408815542738).

642424424246 is a wasteful number, since it uses less digits than its factorization.

642424424246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29201110206.

The product of its digits is 2359296, while the sum is 44.

The spelling of 642424424246 in words is "six hundred forty-two billion, four hundred twenty-four million, four hundred twenty-four thousand, two hundred forty-six".