42005253659 has 2 divisors, whose sum is σ = 42005253660. Its totient is φ = 42005253658.

The previous prime is 42005253643. The next prime is 42005253749. The reversal of 42005253659 is 95635250024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42005253659 - 2⁴ = 42005253643 is a prime.

It is not a weakly prime, because it can be changed into another prime (42005283659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21002626829 + 21002626830.

It is an arithmetic number, because the mean of its divisors is an integer number (21002626830).

Almost surely, 2^42005253659 is an apocalyptic number.

42005253659 is a deficient number, since it is larger than the sum of its proper divisors (1).

42005253659 is an equidigital number, since it uses as much as digits as its factorization.

42005253659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 42005253659 in words is "forty-two billion, five million, two hundred fifty-three thousand, six hundred fifty-nine".