42427811 has 2 divisors, whose sum is σ = 42427812. Its totient is φ = 42427810.

The previous prime is 42427751. The next prime is 42427831. The reversal of 42427811 is 11872424.

42427811 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 42427811 - 2¹⁸ = 42165667 is a prime.

It is not a weakly prime, because it can be changed into another prime (42427831) 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, 21213905 + 21213906.

It is an arithmetic number, because the mean of its divisors is an integer number (21213906).

Almost surely, 2^42427811 is an apocalyptic number.

42427811 is a deficient number, since it is larger than the sum of its proper divisors (1).

42427811 is an equidigital number, since it uses as much as digits as its factorization.

42427811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3584, while the sum is 29.

The square root of 42427811 is about 6513.6634085590. The cubic root of 42427811 is about 348.7789039220.

The spelling of 42427811 in words is "forty-two million, four hundred twenty-seven thousand, eight hundred eleven".