42054647 has 2 divisors, whose sum is σ = 42054648. Its totient is φ = 42054646.

The previous prime is 42054629. The next prime is 42054659. The reversal of 42054647 is 74645024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42054647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42054667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21027323 + 21027324.

It is an arithmetic number, because the mean of its divisors is an integer number (21027324).

Almost surely, 2^42054647 is an apocalyptic number.

42054647 is a deficient number, since it is larger than the sum of its proper divisors (1).

42054647 is an equidigital number, since it uses as much as digits as its factorization.

42054647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 42054647 is about 6484.9554354675. The cubic root of 42054647 is about 347.7533566340.

The spelling of 42054647 in words is "forty-two million, fifty-four thousand, six hundred forty-seven".