42502547 has 2 divisors, whose sum is σ = 42502548. Its totient is φ = 42502546.

The previous prime is 42502541. The next prime is 42502549. The reversal of 42502547 is 74520524.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42502547 - 2¹⁴ = 42486163 is a prime.

Together with 42502549, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42502541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21251273 + 21251274.

It is an arithmetic number, because the mean of its divisors is an integer number (21251274).

Almost surely, 2^42502547 is an apocalyptic number.

42502547 is a deficient number, since it is larger than the sum of its proper divisors (1).

42502547 is an equidigital number, since it uses as much as digits as its factorization.

42502547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 42502547 is about 6519.3977482587. The cubic root of 42502547 is about 348.9835735270.

The spelling of 42502547 in words is "forty-two million, five hundred two thousand, five hundred forty-seven".