42784811 has 2 divisors, whose sum is σ = 42784812. Its totient is φ = 42784810.

The previous prime is 42784799. The next prime is 42784823. The reversal of 42784811 is 11848724.

It is a balanced prime because it is at equal distance from previous prime (42784799) and next prime (42784823).

It is a cyclic number.

It is not a de Polignac number, because 42784811 - 2²² = 38590507 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42784891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21392405 + 21392406.

It is an arithmetic number, because the mean of its divisors is an integer number (21392406).

Almost surely, 2^42784811 is an apocalyptic number.

42784811 is a deficient number, since it is larger than the sum of its proper divisors (1).

42784811 is an equidigital number, since it uses as much as digits as its factorization.

42784811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14336, while the sum is 35.

The square root of 42784811 is about 6541.0099373109. The cubic root of 42784811 is about 349.7544154761.

The spelling of 42784811 in words is "forty-two million, seven hundred eighty-four thousand, eight hundred eleven".