42123412 has 12 divisors (see below), whose sum is σ = 74158560. Its totient is φ = 20935256.

The previous prime is 42123401. The next prime is 42123449. The reversal of 42123412 is 21432124.

It is a self number, because there is not a number n which added to its sum of digits gives 42123412.

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, 30862 + ... + 32197.

It is an arithmetic number, because the mean of its divisors is an integer number (6179880).

Almost surely, 2^42123412 is an apocalyptic number.

It is an amenable number.

42123412 is a deficient number, since it is larger than the sum of its proper divisors (32035148).

42123412 is a wasteful number, since it uses less digits than its factorization.

42123412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63230 (or 63228 counting only the distinct ones).

The product of its digits is 384, while the sum is 19.

The square root of 42123412 is about 6490.2551567716. The cubic root of 42123412 is about 347.9427945780.

Adding to 42123412 its reverse (21432124), we get a palindrome (63555536).

The spelling of 42123412 in words is "forty-two million, one hundred twenty-three thousand, four hundred twelve".