42235820791 has 4 divisors (see below), whose sum is σ = 42236309952. Its totient is φ = 42235331632.

The previous prime is 42235820773. The next prime is 42235820821. The reversal of 42235820791 is 19702853224.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42235820791 - 2⁹ = 42235820279 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 (42235820591) 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, 76615 + ... + 300568.

It is an arithmetic number, because the mean of its divisors is an integer number (10559077488).

Almost surely, 2^42235820791 is an apocalyptic number.

42235820791 is a deficient number, since it is larger than the sum of its proper divisors (489161).

42235820791 is a wasteful number, since it uses less digits than its factorization.

42235820791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489160.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 42235820791 in words is "forty-two billion, two hundred thirty-five million, eight hundred twenty thousand, seven hundred ninety-one".