42727823 has 2 divisors, whose sum is σ = 42727824. Its totient is φ = 42727822.

The previous prime is 42727807. The next prime is 42727831. The reversal of 42727823 is 32872724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42727823 - 2⁴ = 42727807 is a prime.

It is equal to p_2589128 and since 42727823 and 2589128 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42727723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21363911 + 21363912.

It is an arithmetic number, because the mean of its divisors is an integer number (21363912).

Almost surely, 2^42727823 is an apocalyptic number.

42727823 is a deficient number, since it is larger than the sum of its proper divisors (1).

42727823 is an equidigital number, since it uses as much as digits as its factorization.

42727823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37632, while the sum is 35.

The square root of 42727823 is about 6536.6522777336. The cubic root of 42727823 is about 349.5990592471.

The spelling of 42727823 in words is "forty-two million, seven hundred twenty-seven thousand, eight hundred twenty-three".