42123204212 has 24 divisors (see below), whose sum is σ = 77714296800. Its totient is φ = 19922517216.

The previous prime is 42123204199. The next prime is 42123204239. The reversal of 42123204212 is 21240232124.

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, 374762 + ... + 474017.

It is an arithmetic number, because the mean of its divisors is an integer number (3238095700).

Almost surely, 2^42123204212 is an apocalyptic number.

It is an amenable number.

42123204212 is a deficient number, since it is larger than the sum of its proper divisors (35591092588).

42123204212 is a wasteful number, since it uses less digits than its factorization.

42123204212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849455 (or 849453 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 42123204212 its reverse (21240232124), we get a palindrome (63363436336).

The spelling of 42123204212 in words is "forty-two billion, one hundred twenty-three million, two hundred four thousand, two hundred twelve".