42041043309539 has 2 divisors, whose sum is σ = 42041043309540. Its totient is φ = 42041043309538.

The previous prime is 42041043309341. The next prime is 42041043309569. The reversal of 42041043309539 is 93590334014024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42041043309539 - 2¹⁶ = 42041043244003 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42041043309493 and 42041043309502.

It is not a weakly prime, because it can be changed into another prime (42041043309569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21020521654769 + 21020521654770.

It is an arithmetic number, because the mean of its divisors is an integer number (21020521654770).

Almost surely, 2^{42041043309539} is an apocalyptic number.

42041043309539 is a deficient number, since it is larger than the sum of its proper divisors (1).

42041043309539 is an equidigital number, since it uses as much as digits as its factorization.

42041043309539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 47.

The spelling of 42041043309539 in words is "forty-two trillion, forty-one billion, forty-three million, three hundred nine thousand, five hundred thirty-nine".