42100421323 has 4 divisors (see below), whose sum is σ = 43930874448. Its totient is φ = 40269968200.

The previous prime is 42100421269. The next prime is 42100421329. The reversal of 42100421323 is 32312400124.

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 42100421323 - 2¹⁷ = 42100290251 is a prime.

It is a super-2 number, since 2×42100421323² (a number of 22 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 = 42100421294 and 42100421303.

It is not an unprimeable number, because it can be changed into a prime (42100421329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915226528 + ... + 915226573.

It is an arithmetic number, because the mean of its divisors is an integer number (10982718612).

Almost surely, 2^42100421323 is an apocalyptic number.

42100421323 is a deficient number, since it is larger than the sum of its proper divisors (1830453125).

42100421323 is a wasteful number, since it uses less digits than its factorization.

42100421323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830453124.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 42100421323 its reverse (32312400124), we get a palindrome (74412821447).

The spelling of 42100421323 in words is "forty-two billion, one hundred million, four hundred twenty-one thousand, three hundred twenty-three".