2101434139 has 6 divisors (see below), whose sum is σ = 2444525484. Its totient is φ = 1801229220.

The previous prime is 2101434133. The next prime is 2101434157. The reversal of 2101434139 is 9314341012.

It is a de Polignac number, because none of the positive numbers 2^k-2101434139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101434133) 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 5 ways as a sum of consecutive naturals, for example, 21443157 + ... + 21443254.

It is an arithmetic number, because the mean of its divisors is an integer number (407420914).

Almost surely, 2^2101434139 is an apocalyptic number.

2101434139 is a deficient number, since it is larger than the sum of its proper divisors (343091345).

2101434139 is an equidigital number, since it uses as much as digits as its factorization.

2101434139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42886425 (or 42886418 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 2101434139 is about 45841.4020182629. The cubic root of 2101434139 is about 1280.8706111164.

The spelling of 2101434139 in words is "two billion, one hundred one million, four hundred thirty-four thousand, one hundred thirty-nine".