3920206770842 has 4 divisors (see below), whose sum is σ = 5880310156266. Its totient is φ = 1960103385420.

The previous prime is 3920206770797. The next prime is 3920206770901. The reversal of 3920206770842 is 2480776020293.

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., 3254809283881 + 665397486961 = 1804109^2 + 815719^2 .

It is a super-2 number, since 2×3920206770842² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

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, 980051692709 + ... + 980051692712.

Almost surely, 2^{3920206770842} is an apocalyptic number.

3920206770842 is a deficient number, since it is larger than the sum of its proper divisors (1960103385424).

3920206770842 is a wasteful number, since it uses less digits than its factorization.

3920206770842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1960103385423.

The product of its (nonzero) digits is 2032128, while the sum is 50.

The spelling of 3920206770842 in words is "three trillion, nine hundred twenty billion, two hundred six million, seven hundred seventy thousand, eight hundred forty-two".