42846815642 has 4 divisors (see below), whose sum is σ = 64270223466. Its totient is φ = 21423407820.

The previous prime is 42846815617. The next prime is 42846815677. The reversal of 42846815642 is 24651864824.

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., 24689522641 + 18157293001 = 157129^2 + 134749^2 .

It is a super-2 number, since 2×42846815642² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10711703909 + ... + 10711703912.

Almost surely, 2^42846815642 is an apocalyptic number.

42846815642 is a deficient number, since it is larger than the sum of its proper divisors (21423407824).

42846815642 is a wasteful number, since it uses less digits than its factorization.

42846815642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21423407823.

The product of its digits is 2949120, while the sum is 50.

The spelling of 42846815642 in words is "forty-two billion, eight hundred forty-six million, eight hundred fifteen thousand, six hundred forty-two".