42445020245 has 8 divisors (see below), whose sum is σ = 50935146840. Its totient is φ = 33955267840.

The previous prime is 42445020229. The next prime is 42445020263. The reversal of 42445020245 is 54202054424.

It can be written as a sum of positive squares in 4 ways, for example, as 1222621156 + 41222399089 = 34966^2 + 203033^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42445020245 - 2⁴ = 42445020229 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331985 + ... + 441705.

It is an arithmetic number, because the mean of its divisors is an integer number (6366893355).

Almost surely, 2^42445020245 is an apocalyptic number.

It is an amenable number.

42445020245 is a deficient number, since it is larger than the sum of its proper divisors (8490126595).

42445020245 is a wasteful number, since it uses less digits than its factorization.

42445020245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187095.

The product of its (nonzero) digits is 51200, while the sum is 32.

Adding to 42445020245 its reverse (54202054424), we get a palindrome (96647074669).

The spelling of 42445020245 in words is "forty-two billion, four hundred forty-five million, twenty thousand, two hundred forty-five".