642571175246 has 96 divisors (see below), whose sum is σ = 1318558318560. Its totient is φ = 230863046400.

The previous prime is 642571175243. The next prime is 642571175261.

It is a happy number.

642571175246 is nontrivially palindromic in base 10.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 642571175194 and 642571175203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642571175243) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14285840 + ... + 14330748.

It is an arithmetic number, because the mean of its divisors is an integer number (13734982485).

Almost surely, 2^642571175246 is an apocalyptic number.

642571175246 is an abundant number, since it is smaller than the sum of its proper divisors (675987143314).

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

642571175246 is a wasteful number, since it uses less digits than its factorization.

642571175246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45970 (or 45963 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 50.

The spelling of 642571175246 in words is "six hundred forty-two billion, five hundred seventy-one million, one hundred seventy-five thousand, two hundred forty-six".