40842727 has 2 divisors, whose sum is σ = 40842728. Its totient is φ = 40842726.

The previous prime is 40842713. The next prime is 40842743. The reversal of 40842727 is 72724804.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40842727 - 2²³ = 32454119 is a prime.

It is equal to p_2481865 and since 40842727 and 2481865 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 40842692 and 40842701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40842707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20421363 + 20421364.

It is an arithmetic number, because the mean of its divisors is an integer number (20421364).

Almost surely, 2^40842727 is an apocalyptic number.

40842727 is a deficient number, since it is larger than the sum of its proper divisors (1).

40842727 is an equidigital number, since it uses as much as digits as its factorization.

40842727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25088, while the sum is 34.

The square root of 40842727 is about 6390.8314795494. The cubic root of 40842727 is about 344.3802554416.

The spelling of 40842727 in words is "forty million, eight hundred forty-two thousand, seven hundred twenty-seven".