42497208 has 48 divisors (see below), whose sum is σ = 123952920. Its totient is φ = 13075776.

The previous prime is 42497207. The next prime is 42497227. The reversal of 42497208 is 80279424.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42497207) 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 11 ways as a sum of consecutive naturals, for example, 21766 + ... + 23637.

Almost surely, 2^42497208 is an apocalyptic number.

It is an amenable number.

42497208 is an abundant number, since it is smaller than the sum of its proper divisors (81455712).

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

42497208 is a wasteful number, since it uses less digits than its factorization.

42497208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45428 (or 45421 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 42497208 is about 6518.9882650608. The cubic root of 42497208 is about 348.9689602748.

The spelling of 42497208 in words is "forty-two million, four hundred ninety-seven thousand, two hundred eight".