42123223422 has 64 divisors (see below), whose sum is σ = 107043010560. Its totient is φ = 12028074912.

The previous prime is 42123223379. The next prime is 42123223423. The reversal of 42123223422 is 22432232124.

42123223422 is a `hidden beast` number, since 4 + 2 + 1 + 232 + 2 + 3 + 422 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42123223423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 622923 + ... + 687225.

It is an arithmetic number, because the mean of its divisors is an integer number (1672547040).

Almost surely, 2^42123223422 is an apocalyptic number.

42123223422 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

42123223422 is an abundant number, since it is smaller than the sum of its proper divisors (64919787138).

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

42123223422 is a wasteful number, since it uses less digits than its factorization.

42123223422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66054 (or 66048 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

Adding to 42123223422 its reverse (22432232124), we get a palindrome (64555455546).

The spelling of 42123223422 in words is "forty-two billion, one hundred twenty-three million, two hundred twenty-three thousand, four hundred twenty-two".