42123202004 has 36 divisors (see below), whose sum is σ = 84517669404. Its totient is φ = 18297856512.

The previous prime is 42123201997. The next prime is 42123202063. The reversal of 42123202004 is 40020232124.

It can be written as a sum of positive squares in 6 ways, for example, as 14032771600 + 28090430404 = 118460^2 + 167602^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1821227 + ... + 1844210.

It is an arithmetic number, because the mean of its divisors is an integer number (2347713039).

Almost surely, 2^42123202004 is an apocalyptic number.

It is an amenable number.

42123202004 is an abundant number, since it is smaller than the sum of its proper divisors (42394467400).

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

42123202004 is a wasteful number, since it uses less digits than its factorization.

42123202004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3665484 (or 3665469 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 42123202004 its reverse (40020232124), we get a palindrome (82143434128).

The spelling of 42123202004 in words is "forty-two billion, one hundred twenty-three million, two hundred two thousand, four".