42635223959 has 4 divisors (see below), whose sum is σ = 43033684104. Its totient is φ = 42236763816.

The previous prime is 42635223937. The next prime is 42635223989. The reversal of 42635223959 is 95932253624.

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 42635223959 - 2⁸ = 42635223703 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 (42635223929) 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, 199229912 + ... + 199230125.

It is an arithmetic number, because the mean of its divisors is an integer number (10758421026).

Almost surely, 2^42635223959 is an apocalyptic number.

42635223959 is a deficient number, since it is larger than the sum of its proper divisors (398460145).

42635223959 is a wasteful number, since it uses less digits than its factorization.

42635223959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398460144.

The product of its digits is 3499200, while the sum is 50.

The spelling of 42635223959 in words is "forty-two billion, six hundred thirty-five million, two hundred twenty-three thousand, nine hundred fifty-nine".