42404866823 has 16 divisors (see below), whose sum is σ = 48873231360. Its totient is φ = 36428632800.

The previous prime is 42404866813. The next prime is 42404866841. The reversal of 42404866823 is 32866840424.

It is a cyclic number.

It is not a de Polignac number, because 42404866823 - 2²⁸ = 42136431367 is a prime.

It is a super-2 number, since 2×42404866823² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42404866813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1399163 + ... + 1429148.

It is an arithmetic number, because the mean of its divisors is an integer number (3054576960).

Almost surely, 2^42404866823 is an apocalyptic number.

42404866823 is a deficient number, since it is larger than the sum of its proper divisors (6468364537).

42404866823 is a wasteful number, since it uses less digits than its factorization.

42404866823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2828398.

The product of its (nonzero) digits is 1769472, while the sum is 47.

The spelling of 42404866823 in words is "forty-two billion, four hundred four million, eight hundred sixty-six thousand, eight hundred twenty-three".