42404466440423 has 4 divisors (see below), whose sum is σ = 42414677007168. Its totient is φ = 42394255873680.

The previous prime is 42404466440393. The next prime is 42404466440449. The reversal of 42404466440423 is 32404466440424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42404466440423 - 2⁶ = 42404466440359 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 (42404466440723) 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, 5105277143 + ... + 5105285448.

It is an arithmetic number, because the mean of its divisors is an integer number (10603669251792).

Almost surely, 2^{42404466440423} is an apocalyptic number.

42404466440423 is a deficient number, since it is larger than the sum of its proper divisors (10210566745).

42404466440423 is a wasteful number, since it uses less digits than its factorization.

42404466440423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10210566744.

The product of its (nonzero) digits is 7077888, while the sum is 47.

Subtracting from 42404466440423 its reverse (32404466440424), we obtain a palindrome (9999999999999).

The spelling of 42404466440423 in words is "forty-two trillion, four hundred four billion, four hundred sixty-six million, four hundred forty thousand, four hundred twenty-three".