42100078365 has 24 divisors (see below), whose sum is σ = 72984637440. Its totient is φ = 22449938784.

The previous prime is 42100078357. The next prime is 42100078367. The reversal of 42100078365 is 56387000124.

It is not a de Polignac number, because 42100078365 - 2³ = 42100078357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42100078367) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 240676 + ... + 376994.

It is an arithmetic number, because the mean of its divisors is an integer number (3041026560).

Almost surely, 2^42100078365 is an apocalyptic number.

42100078365 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42100078365 is a deficient number, since it is larger than the sum of its proper divisors (30884559075).

42100078365 is a wasteful number, since it uses less digits than its factorization.

42100078365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143193 (or 143190 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

Adding to 42100078365 its reverse (56387000124), we get a palindrome (98487078489).

The spelling of 42100078365 in words is "forty-two billion, one hundred million, seventy-eight thousand, three hundred sixty-five".