42903647 has 2 divisors, whose sum is σ = 42903648. Its totient is φ = 42903646.

The previous prime is 42903629. The next prime is 42903661. The reversal of 42903647 is 74630924.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42903647 - 2¹⁴ = 42887263 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42903677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21451823 + 21451824.

It is an arithmetic number, because the mean of its divisors is an integer number (21451824).

Almost surely, 2^42903647 is an apocalyptic number.

42903647 is a deficient number, since it is larger than the sum of its proper divisors (1).

42903647 is an equidigital number, since it uses as much as digits as its factorization.

42903647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 42903647 is about 6550.0875566667. The cubic root of 42903647 is about 350.0779336658.

The spelling of 42903647 in words is "forty-two million, nine hundred three thousand, six hundred forty-seven".