42420043421302 has 4 divisors (see below), whose sum is σ = 63630065131956. Its totient is φ = 21210021710650.

The previous prime is 42420043421299. The next prime is 42420043421323. The reversal of 42420043421302 is 20312434002424.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605010855324 + ... + 10605010855327.

It is an arithmetic number, because the mean of its divisors is an integer number (15907516282989).

Almost surely, 2^{42420043421302} is an apocalyptic number.

42420043421302 is a deficient number, since it is larger than the sum of its proper divisors (21210021710654).

42420043421302 is a wasteful number, since it uses less digits than its factorization.

42420043421302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21210021710653.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 42420043421302 its reverse (20312434002424), we get a palindrome (62732477423726).

The spelling of 42420043421302 in words is "forty-two trillion, four hundred twenty billion, forty-three million, four hundred twenty-one thousand, three hundred two".