40086262642 has 4 divisors (see below), whose sum is σ = 60129393966. Its totient is φ = 20043131320.

The previous prime is 40086262639. The next prime is 40086262649. The reversal of 40086262642 is 24626268004.

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., 34588188441 + 5498074201 = 185979^2 + 74149^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40086262595 and 40086262604.

It is not an unprimeable number, because it can be changed into a prime (40086262649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10021565659 + ... + 10021565662.

Almost surely, 2^40086262642 is an apocalyptic number.

40086262642 is a deficient number, since it is larger than the sum of its proper divisors (20043131324).

40086262642 is a wasteful number, since it uses less digits than its factorization.

40086262642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20043131323.

The product of its (nonzero) digits is 221184, while the sum is 40.

The spelling of 40086262642 in words is "forty billion, eighty-six million, two hundred sixty-two thousand, six hundred forty-two".