42497803 has 4 divisors (see below), whose sum is σ = 43486168. Its totient is φ = 41509440.

The previous prime is 42497797. The next prime is 42497821. The reversal of 42497803 is 30879424.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42497803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42497863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494118 + ... + 494203.

It is an arithmetic number, because the mean of its divisors is an integer number (10871542).

Almost surely, 2^42497803 is an apocalyptic number.

42497803 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

42497803 is a deficient number, since it is larger than the sum of its proper divisors (988365).

42497803 is an equidigital number, since it uses as much as digits as its factorization.

42497803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988364.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 42497803 is about 6519.0339008169. The cubic root of 42497803 is about 348.9705888960.

The spelling of 42497803 in words is "forty-two million, four hundred ninety-seven thousand, eight hundred three".