52423417642 has 4 divisors (see below), whose sum is σ = 78635126466. Its totient is φ = 26211708820.

The previous prime is 52423417637. The next prime is 52423417679. The reversal of 52423417642 is 24671432425.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 29950109721 + 22473307921 = 173061^2 + 149911^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 52423417595 and 52423417604.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13105854409 + ... + 13105854412.

Almost surely, 2^52423417642 is an apocalyptic number.

52423417642 is a deficient number, since it is larger than the sum of its proper divisors (26211708824).

52423417642 is a wasteful number, since it uses less digits than its factorization.

52423417642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26211708823.

The product of its digits is 322560, while the sum is 40.

The spelling of 52423417642 in words is "fifty-two billion, four hundred twenty-three million, four hundred seventeen thousand, six hundred forty-two".