42505463213 has 4 divisors (see below), whose sum is σ = 42551218140. Its totient is φ = 42459708288.

The previous prime is 42505463173. The next prime is 42505463243. The reversal of 42505463213 is 31236450524.

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

It can be written as a sum of positive squares in 2 ways, for example, as 299047849 + 42206415364 = 17293^2 + 205442^2 .

It is a cyclic number.

It is not a de Polignac number, because 42505463213 - 2¹⁰ = 42505462189 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 (42505463243) 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, 22876070 + ... + 22877927.

It is an arithmetic number, because the mean of its divisors is an integer number (10637804535).

Almost surely, 2^42505463213 is an apocalyptic number.

It is an amenable number.

42505463213 is a deficient number, since it is larger than the sum of its proper divisors (45754927).

42505463213 is an equidigital number, since it uses as much as digits as its factorization.

42505463213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45754926.

The product of its (nonzero) digits is 86400, while the sum is 35.

The spelling of 42505463213 in words is "forty-two billion, five hundred five million, four hundred sixty-three thousand, two hundred thirteen".