42912065389 has 4 divisors (see below), whose sum is σ = 42912816256. Its totient is φ = 42911314524.

The previous prime is 42912065353. The next prime is 42912065393. The reversal of 42912065389 is 98356021924.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42912065389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42912015389) 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, 281949 + ... + 406594.

It is an arithmetic number, because the mean of its divisors is an integer number (10728204064).

Almost surely, 2^42912065389 is an apocalyptic number.

It is an amenable number.

42912065389 is a deficient number, since it is larger than the sum of its proper divisors (750867).

42912065389 is an equidigital number, since it uses as much as digits as its factorization.

42912065389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750866.

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 42912065389 in words is "forty-two billion, nine hundred twelve million, sixty-five thousand, three hundred eighty-nine".