42309727 has 2 divisors, whose sum is σ = 42309728. Its totient is φ = 42309726.

The previous prime is 42309703. The next prime is 42309731. The reversal of 42309727 is 72790324.

42309727 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 42309727 - 2¹⁵ = 42276959 is a prime.

It is a super-2 number, since 2×42309727² = 3580225997629058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42309692 and 42309701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42309737) 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, 21154863 + 21154864.

It is an arithmetic number, because the mean of its divisors is an integer number (21154864).

Almost surely, 2^42309727 is an apocalyptic number.

42309727 is a deficient number, since it is larger than the sum of its proper divisors (1).

42309727 is an equidigital number, since it uses as much as digits as its factorization.

42309727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 42309727 is about 6504.5927620413. The cubic root of 42309727 is about 348.4550324263.

The spelling of 42309727 in words is "forty-two million, three hundred nine thousand, seven hundred twenty-seven".