42123020312 has 16 divisors (see below), whose sum is σ = 78993570840. Its totient is φ = 21058068096.

The previous prime is 42123020297. The next prime is 42123020321. The reversal of 42123020312 is 21302032124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377873 + ... + 476480.

Almost surely, 2^42123020312 is an apocalyptic number.

It is an amenable number.

42123020312 is a deficient number, since it is larger than the sum of its proper divisors (36870550528).

42123020312 is a wasteful number, since it uses less digits than its factorization.

42123020312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860522 (or 860518 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 42123020312 its reverse (21302032124), we get a palindrome (63425052436).

The spelling of 42123020312 in words is "forty-two billion, one hundred twenty-three million, twenty thousand, three hundred twelve".