42321320139 has 48 divisors (see below), whose sum is σ = 66579356160. Its totient is φ = 23909350080.

The previous prime is 42321320117. The next prime is 42321320179. The reversal of 42321320139 is 93102312324.

It is not a de Polignac number, because 42321320139 - 2⁷ = 42321320011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42321320179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4482754 + ... + 4492184.

It is an arithmetic number, because the mean of its divisors is an integer number (1387069920).

Almost surely, 2^42321320139 is an apocalyptic number.

42321320139 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

42321320139 is a deficient number, since it is larger than the sum of its proper divisors (24258036021).

42321320139 is an frugal number, since it uses more digits than its factorization.

42321320139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9558 (or 9530 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The spelling of 42321320139 in words is "forty-two billion, three hundred twenty-one million, three hundred twenty thousand, one hundred thirty-nine".