42104223043421 has 24 divisors (see below), whose sum is σ = 54162893119104. Its totient is φ = 32359054150080.

The previous prime is 42104223043387. The next prime is 42104223043423. The reversal of 42104223043421 is 12434032240124.

It is a happy number.

It is not a de Polignac number, because 42104223043421 - 2¹⁸ = 42104222781277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42104223043423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 534997925 + ... + 535076618.

It is an arithmetic number, because the mean of its divisors is an integer number (2256787213296).

Almost surely, 2^{42104223043421} is an apocalyptic number.

It is an amenable number.

42104223043421 is a deficient number, since it is larger than the sum of its proper divisors (12058670075683).

42104223043421 is a wasteful number, since it uses less digits than its factorization.

42104223043421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070074641 (or 1070074634 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 42104223043421 its reverse (12434032240124), we get a palindrome (54538255283545).

The spelling of 42104223043421 in words is "forty-two trillion, one hundred four billion, two hundred twenty-three million, forty-three thousand, four hundred twenty-one".