42943635049 has 4 divisors (see below), whose sum is σ = 49078440064. Its totient is φ = 36808830036.

The previous prime is 42943635047. The next prime is 42943635071. The reversal of 42943635049 is 94053634924.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42943635049 - 2¹ = 42943635047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42943634993 and 42943635011.

It is not an unprimeable number, because it can be changed into a prime (42943635047) 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, 3067402497 + ... + 3067402510.

It is an arithmetic number, because the mean of its divisors is an integer number (12269610016).

Almost surely, 2^42943635049 is an apocalyptic number.

It is an amenable number.

42943635049 is a deficient number, since it is larger than the sum of its proper divisors (6134805015).

42943635049 is an equidigital number, since it uses as much as digits as its factorization.

42943635049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6134805014.

The product of its (nonzero) digits is 2799360, while the sum is 49.

The spelling of 42943635049 in words is "forty-two billion, nine hundred forty-three million, six hundred thirty-five thousand, forty-nine".