42769691 has 2 divisors, whose sum is σ = 42769692. Its totient is φ = 42769690.

The previous prime is 42769667. The next prime is 42769697. The reversal of 42769691 is 19696724.

42769691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42769691 - 2¹⁰ = 42768667 is a prime.

It is not a weakly prime, because it can be changed into another prime (42769697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21384845 + 21384846.

It is an arithmetic number, because the mean of its divisors is an integer number (21384846).

Almost surely, 2^42769691 is an apocalyptic number.

42769691 is a deficient number, since it is larger than the sum of its proper divisors (1).

42769691 is an equidigital number, since it uses as much as digits as its factorization.

42769691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 44.

The square root of 42769691 is about 6539.8540503592. The cubic root of 42769691 is about 349.7132099664.

The spelling of 42769691 in words is "forty-two million, seven hundred sixty-nine thousand, six hundred ninety-one".