42085850999 has 4 divisors (see below), whose sum is σ = 42087240336. Its totient is φ = 42084461664.

The previous prime is 42085850993. The next prime is 42085851013. The reversal of 42085850999 is 99905858024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42085850999 - 2²⁸ = 41817415543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42085850993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648194 + ... + 710159.

It is an arithmetic number, because the mean of its divisors is an integer number (10521810084).

Almost surely, 2^42085850999 is an apocalyptic number.

42085850999 is a deficient number, since it is larger than the sum of its proper divisors (1389337).

42085850999 is a wasteful number, since it uses less digits than its factorization.

42085850999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389336.

The product of its (nonzero) digits is 9331200, while the sum is 59.

The spelling of 42085850999 in words is "forty-two billion, eighty-five million, eight hundred fifty thousand, nine hundred ninety-nine".