39806380242 has 24 divisors (see below), whose sum is σ = 89029324800. Its totient is φ = 12840767640.

The previous prime is 39806380231. The next prime is 39806380261. The reversal of 39806380242 is 24208360893.

39806380242 is a `hidden beast` number, since 3 + 9 + 8 + 0 + 638 + 0 + 2 + 4 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35668242 + ... + 35669357.

It is an arithmetic number, because the mean of its divisors is an integer number (3709555200).

Almost surely, 2^39806380242 is an apocalyptic number.

39806380242 is an abundant number, since it is smaller than the sum of its proper divisors (49222944558).

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

39806380242 is a wasteful number, since it uses less digits than its factorization.

39806380242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71337638 (or 71337635 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 39806380242 in words is "thirty-nine billion, eight hundred six million, three hundred eighty thousand, two hundred forty-two".