42921675139 has 16 divisors (see below), whose sum is σ = 49907430400. Its totient is φ = 36152132544.

The previous prime is 42921675133. The next prime is 42921675149. The reversal of 42921675139 is 93157612924.

It is a cyclic number.

It is not a de Polignac number, because 42921675139 - 2²⁵ = 42888120707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42921675092 and 42921675101.

It is not an unprimeable number, because it can be changed into a prime (42921675133) 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 in 15 ways as a sum of consecutive naturals, for example, 79942 + ... + 303700.

It is an arithmetic number, because the mean of its divisors is an integer number (3119214400).

Almost surely, 2^42921675139 is an apocalyptic number.

42921675139 is a deficient number, since it is larger than the sum of its proper divisors (6985755261).

42921675139 is a wasteful number, since it uses less digits than its factorization.

42921675139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224242.

The product of its digits is 816480, while the sum is 49.

The spelling of 42921675139 in words is "forty-two billion, nine hundred twenty-one million, six hundred seventy-five thousand, one hundred thirty-nine".