42939995507 has 2 divisors, whose sum is σ = 42939995508. Its totient is φ = 42939995506.

The previous prime is 42939995491. The next prime is 42939995519. The reversal of 42939995507 is 70559993924.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42939995507 - 2⁴ = 42939995491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42939995507.

It is not a weakly prime, because it can be changed into another prime (42939995537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21469997753 + 21469997754.

It is an arithmetic number, because the mean of its divisors is an integer number (21469997754).

Almost surely, 2^42939995507 is an apocalyptic number.

42939995507 is a deficient number, since it is larger than the sum of its proper divisors (1).

42939995507 is an equidigital number, since it uses as much as digits as its factorization.

42939995507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27556200, while the sum is 62.

The spelling of 42939995507 in words is "forty-two billion, nine hundred thirty-nine million, nine hundred ninety-five thousand, five hundred seven".