3842140459879 has 4 divisors (see below), whose sum is σ = 4044358378840. Its totient is φ = 3639922540920.

The previous prime is 3842140459811. The next prime is 3842140459907. The reversal of 3842140459879 is 9789540412483.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3842140459879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3842140459879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3842140459379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101108959452 + ... + 101108959489.

It is an arithmetic number, because the mean of its divisors is an integer number (1011089594710).

Almost surely, 2^{3842140459879} is an apocalyptic number.

3842140459879 is a deficient number, since it is larger than the sum of its proper divisors (202217918961).

3842140459879 is a wasteful number, since it uses less digits than its factorization.

3842140459879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202217918960.

The product of its (nonzero) digits is 69672960, while the sum is 64.

The spelling of 3842140459879 in words is "three trillion, eight hundred forty-two billion, one hundred forty million, four hundred fifty-nine thousand, eight hundred seventy-nine".