642829286839 has 8 divisors (see below), whose sum is σ = 643095411840. Its totient is φ = 642563221176.

The previous prime is 642829286773. The next prime is 642829286851. The reversal of 642829286839 is 938682928246.

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

It is a cyclic number.

It is not a de Polignac number, because 642829286839 - 2⁷ = 642829286711 is a prime.

It is a super-2 number, since 2×642829286839² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642829286639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48740604 + ... + 48753790.

It is an arithmetic number, because the mean of its divisors is an integer number (80386926480).

Almost surely, 2^642829286839 is an apocalyptic number.

642829286839 is a deficient number, since it is larger than the sum of its proper divisors (266125001).

642829286839 is a wasteful number, since it uses less digits than its factorization.

642829286839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29669.

The product of its digits is 143327232, while the sum is 67.

The spelling of 642829286839 in words is "six hundred forty-two billion, eight hundred twenty-nine million, two hundred eighty-six thousand, eight hundred thirty-nine".