42042527 has 2 divisors, whose sum is σ = 42042528. Its totient is φ = 42042526.

The previous prime is 42042523. The next prime is 42042529. The reversal of 42042527 is 72524024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42042527 - 2² = 42042523 is a prime.

Together with 42042529, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42042496 and 42042505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42042521) 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, 21021263 + 21021264.

It is an arithmetic number, because the mean of its divisors is an integer number (21021264).

Almost surely, 2^42042527 is an apocalyptic number.

42042527 is a deficient number, since it is larger than the sum of its proper divisors (1).

42042527 is an equidigital number, since it uses as much as digits as its factorization.

42042527 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 42042527 is about 6484.0208975604. The cubic root of 42042527 is about 347.7199463298.

The spelling of 42042527 in words is "forty-two million, forty-two thousand, five hundred twenty-seven".