42774727 has 2 divisors, whose sum is σ = 42774728. Its totient is φ = 42774726.

The previous prime is 42774713. The next prime is 42774773. The reversal of 42774727 is 72747724.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42774727 - 2²³ = 34386119 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42774727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42775727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21387363 + 21387364.

It is an arithmetic number, because the mean of its divisors is an integer number (21387364).

Almost surely, 2^42774727 is an apocalyptic number.

42774727 is a deficient number, since it is larger than the sum of its proper divisors (1).

42774727 is an equidigital number, since it uses as much as digits as its factorization.

42774727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 153664, while the sum is 40.

The square root of 42774727 is about 6540.2390629089. The cubic root of 42774727 is about 349.7269353138.

The spelling of 42774727 in words is "forty-two million, seven hundred seventy-four thousand, seven hundred twenty-seven".