42078527 has 2 divisors, whose sum is σ = 42078528. Its totient is φ = 42078526.

The previous prime is 42078511. The next prime is 42078541. The reversal of 42078527 is 72587024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42078527 - 2⁴ = 42078511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42078557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21039263 + 21039264.

It is an arithmetic number, because the mean of its divisors is an integer number (21039264).

Almost surely, 2^42078527 is an apocalyptic number.

42078527 is a deficient number, since it is larger than the sum of its proper divisors (1).

42078527 is an equidigital number, since it uses as much as digits as its factorization.

42078527 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 42078527 is about 6486.7963587583. The cubic root of 42078527 is about 347.8191660781.

The spelling of 42078527 in words is "forty-two million, seventy-eight thousand, five hundred twenty-seven".