42497798 has 12 divisors (see below), whose sum is σ = 74154492. Its totient is φ = 18213300.

The previous prime is 42497797. The next prime is 42497821. The reversal of 42497798 is 89779424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42497797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 216728 + ... + 216923.

It is an arithmetic number, because the mean of its divisors is an integer number (6179541).

Almost surely, 2^42497798 is an apocalyptic number.

42497798 is a deficient number, since it is larger than the sum of its proper divisors (31656694).

42497798 is a wasteful number, since it uses less digits than its factorization.

42497798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433667 (or 433660 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 50.

The square root of 42497798 is about 6519.0335173245. The cubic root of 42497798 is about 348.9705752101.

The spelling of 42497798 in words is "forty-two million, four hundred ninety-seven thousand, seven hundred ninety-eight".