42878331454873 has 4 divisors (see below), whose sum is σ = 42917777943040. Its totient is φ = 42838884966708.

The previous prime is 42878331454841. The next prime is 42878331454877. The reversal of 42878331454873 is 37845413387824.

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 42878331454873 - 2⁵ = 42878331454841 is a prime.

It is a super-2 number, since 2×42878331454873² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42878331454799 and 42878331454808.

It is not an unprimeable number, because it can be changed into a prime (42878331454877) 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, 19723242453 + ... + 19723244626.

It is an arithmetic number, because the mean of its divisors is an integer number (10729444485760).

Almost surely, 2^{42878331454873} is an apocalyptic number.

It is an amenable number.

42878331454873 is a deficient number, since it is larger than the sum of its proper divisors (39446488167).

42878331454873 is a wasteful number, since it uses less digits than its factorization.

42878331454873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39446488166.

The product of its digits is 433520640, while the sum is 67.

The spelling of 42878331454873 in words is "forty-two trillion, eight hundred seventy-eight billion, three hundred thirty-one million, four hundred fifty-four thousand, eight hundred seventy-three".