42040240100013 has 4 divisors (see below), whose sum is σ = 56053653466688. Its totient is φ = 28026826733340.

The previous prime is 42040240100011. The next prime is 42040240100041. The reversal of 42040240100013 is 31000104204024.

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 not a de Polignac number, because 42040240100013 - 2¹ = 42040240100011 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 (42040240100011) 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, 7006706683333 + ... + 7006706683338.

It is an arithmetic number, because the mean of its divisors is an integer number (14013413366672).

Almost surely, 2^{42040240100013} is an apocalyptic number.

It is an amenable number.

42040240100013 is a deficient number, since it is larger than the sum of its proper divisors (14013413366675).

42040240100013 is a wasteful number, since it uses less digits than its factorization.

42040240100013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14013413366674.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 42040240100013 its reverse (31000104204024), we get a palindrome (73040344304037).

The spelling of 42040240100013 in words is "forty-two trillion, forty billion, two hundred forty million, one hundred thousand, thirteen".