42817797 has 12 divisors (see below), whose sum is σ = 67470624. Its totient is φ = 25950120.

The previous prime is 42817787. The next prime is 42817823. The reversal of 42817797 is 79771824.

It is a happy number.

It is not a de Polignac number, because 42817797 - 2¹¹ = 42815749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42817787) 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, 216153 + ... + 216350.

It is an arithmetic number, because the mean of its divisors is an integer number (5622552).

Almost surely, 2^42817797 is an apocalyptic number.

It is an amenable number.

42817797 is a deficient number, since it is larger than the sum of its proper divisors (24652827).

42817797 is a wasteful number, since it uses less digits than its factorization.

42817797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432520 (or 432517 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 42817797 is about 6543.5309275650. The cubic root of 42817797 is about 349.8442763032.

It can be divided in two parts, 428 and 17797, that added together give a square (18225 = 135²).

The spelling of 42817797 in words is "forty-two million, eight hundred seventeen thousand, seven hundred ninety-seven".