42549527 has 2 divisors, whose sum is σ = 42549528. Its totient is φ = 42549526.

The previous prime is 42549511. The next prime is 42549541. The reversal of 42549527 is 72594524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42549527 - 2⁴ = 42549511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42549557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21274763 + 21274764.

It is an arithmetic number, because the mean of its divisors is an integer number (21274764).

Almost surely, 2^42549527 is an apocalyptic number.

42549527 is a deficient number, since it is larger than the sum of its proper divisors (1).

42549527 is an equidigital number, since it uses as much as digits as its factorization.

42549527 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 38.

The square root of 42549527 is about 6522.9998466963. Note that the first 3 decimals coincide. The cubic root of 42549527 is about 349.1121086568.

The spelling of 42549527 in words is "forty-two million, five hundred forty-nine thousand, five hundred twenty-seven".