42004020026420 has 24 divisors (see below), whose sum is σ = 88299284982048. Its totient is φ = 16784304596000.

The previous prime is 42004020026399. The next prime is 42004020026567. The reversal of 42004020026420 is 2462002040024.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 42004020026420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1081443506 + ... + 1081482345.

It is an arithmetic number, because the mean of its divisors is an integer number (3679136874252).

Almost surely, 2^{42004020026420} is an apocalyptic number.

It is an amenable number.

42004020026420 is an abundant number, since it is smaller than the sum of its proper divisors (46295264955628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42004020026420 is a wasteful number, since it uses less digits than its factorization.

42004020026420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2162926831 (or 2162926829 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 42004020026420 its reverse (2462002040024), we get a palindrome (44466022066444).

The spelling of 42004020026420 in words is "forty-two trillion, four billion, twenty million, twenty-six thousand, four hundred twenty".