42123798 has 24 divisors (see below), whose sum is σ = 96072600. Its totient is φ = 13302144.

The previous prime is 42123793. The next prime is 42123839. The reversal of 42123798 is 89732124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42123793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61243 + ... + 61926.

It is an arithmetic number, because the mean of its divisors is an integer number (4003025).

Almost surely, 2^42123798 is an apocalyptic number.

42123798 is an abundant number, since it is smaller than the sum of its proper divisors (53948802).

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

42123798 is a wasteful number, since it uses less digits than its factorization.

42123798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123196 (or 123193 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 42123798 is about 6490.2848935929. The cubic root of 42123798 is about 347.9438573719.

The spelling of 42123798 in words is "forty-two million, one hundred twenty-three thousand, seven hundred ninety-eight".