42530639903 has 2 divisors, whose sum is σ = 42530639904. Its totient is φ = 42530639902.

The previous prime is 42530639897. The next prime is 42530639909. The reversal of 42530639903 is 30993603524.

It is a balanced prime because it is at equal distance from previous prime (42530639897) and next prime (42530639909).

It is a cyclic number.

It is not a de Polignac number, because 42530639903 - 2¹⁴ = 42530623519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42530639909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21265319951 + 21265319952.

It is an arithmetic number, because the mean of its divisors is an integer number (21265319952).

Almost surely, 2^42530639903 is an apocalyptic number.

42530639903 is a deficient number, since it is larger than the sum of its proper divisors (1).

42530639903 is an equidigital number, since it uses as much as digits as its factorization.

42530639903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 44.

The spelling of 42530639903 in words is "forty-two billion, five hundred thirty million, six hundred thirty-nine thousand, nine hundred three".