42491699619423 has 8 divisors (see below), whose sum is σ = 59988281815728. Its totient is φ = 26661458584704.

The previous prime is 42491699619371. The next prime is 42491699619449. The reversal of 42491699619423 is 32491699619424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42491699619423 - 2⁶ = 42491699619359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42491699619493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416585290336 + ... + 416585290437.

It is an arithmetic number, because the mean of its divisors is an integer number (7498535226966).

Almost surely, 2^{42491699619423} is an apocalyptic number.

42491699619423 is a deficient number, since it is larger than the sum of its proper divisors (17496582196305).

42491699619423 is a wasteful number, since it uses less digits than its factorization.

42491699619423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833170580793.

The product of its digits is 181398528, while the sum is 69.

Subtracting from 42491699619423 its reverse (32491699619424), we obtain a palindrome (9999999999999).

The spelling of 42491699619423 in words is "forty-two trillion, four hundred ninety-one billion, six hundred ninety-nine million, six hundred nineteen thousand, four hundred twenty-three".