42346187821 has 8 divisors (see below), whose sum is σ = 48397198464. Its totient is φ = 36295566000.

The previous prime is 42346187803. The next prime is 42346187833. The reversal of 42346187821 is 12878164324.

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

It is a cyclic number.

It is not a de Polignac number, because 42346187821 - 2¹⁵ = 42346155053 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 (42346187801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194571 + ... + 350071.

It is an arithmetic number, because the mean of its divisors is an integer number (6049649808).

Almost surely, 2^42346187821 is an apocalyptic number.

It is an amenable number.

42346187821 is a deficient number, since it is larger than the sum of its proper divisors (6051010643).

42346187821 is a wasteful number, since it uses less digits than its factorization.

42346187821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194411.

The product of its digits is 516096, while the sum is 46.

The spelling of 42346187821 in words is "forty-two billion, three hundred forty-six million, one hundred eighty-seven thousand, eight hundred twenty-one".