642232686471 has 8 divisors (see below), whose sum is σ = 856314014064. Its totient is φ = 428153241600.

The previous prime is 642232686461. The next prime is 642232686481. The reversal of 642232686471 is 174686232246.

It is an interprime number because it is at equal distance from previous prime (642232686461) and next prime (642232686481).

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

It is not a de Polignac number, because 642232686471 - 2²² = 642228492167 is a prime.

It is a super-3 number, since 3×642232686471³ (a number of 36 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642232686451) 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 7 ways as a sum of consecutive naturals, for example, 874375 + ... + 1431431.

It is an arithmetic number, because the mean of its divisors is an integer number (107039251758).

Almost surely, 2^642232686471 is an apocalyptic number.

642232686471 is a deficient number, since it is larger than the sum of its proper divisors (214081327593).

642232686471 is a wasteful number, since it uses less digits than its factorization.

642232686471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941361.

The product of its digits is 4644864, while the sum is 51.

The spelling of 642232686471 in words is "six hundred forty-two billion, two hundred thirty-two million, six hundred eighty-six thousand, four hundred seventy-one".