42705702139 has 2 divisors, whose sum is σ = 42705702140. Its totient is φ = 42705702138.

The previous prime is 42705702107. The next prime is 42705702181. The reversal of 42705702139 is 93120750724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42705702139 - 2⁵ = 42705702107 is a prime.

It is not a weakly prime, because it can be changed into another prime (42705772139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21352851069 + 21352851070.

It is an arithmetic number, because the mean of its divisors is an integer number (21352851070).

Almost surely, 2^42705702139 is an apocalyptic number.

42705702139 is a deficient number, since it is larger than the sum of its proper divisors (1).

42705702139 is an equidigital number, since it uses as much as digits as its factorization.

42705702139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 42705702139 in words is "forty-two billion, seven hundred five million, seven hundred two thousand, one hundred thirty-nine".