42939742511 has 2 divisors, whose sum is σ = 42939742512. Its totient is φ = 42939742510.

The previous prime is 42939742507. The next prime is 42939742541. The reversal of 42939742511 is 11524793924.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42939742511 - 2² = 42939742507 is a prime.

It is a super-3 number, since 3×42939742511³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42939742501) 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, 21469871255 + 21469871256.

It is an arithmetic number, because the mean of its divisors is an integer number (21469871256).

Almost surely, 2^42939742511 is an apocalyptic number.

42939742511 is a deficient number, since it is larger than the sum of its proper divisors (1).

42939742511 is an equidigital number, since it uses as much as digits as its factorization.

42939742511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 47.

The spelling of 42939742511 in words is "forty-two billion, nine hundred thirty-nine million, seven hundred forty-two thousand, five hundred eleven".