42871797 has 12 divisors (see below), whose sum is σ = 62506080. Its totient is φ = 28313448.

The previous prime is 42871781. The next prime is 42871811. The reversal of 42871797 is 79717824.

It is a happy number.

It is not a de Polignac number, because 42871797 - 2⁴ = 42871781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42871757) 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, 21297 + ... + 23222.

It is an arithmetic number, because the mean of its divisors is an integer number (5208840).

Almost surely, 2^42871797 is an apocalyptic number.

It is an amenable number.

42871797 is a deficient number, since it is larger than the sum of its proper divisors (19634283).

42871797 is a wasteful number, since it uses less digits than its factorization.

42871797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44632 (or 44629 counting only the distinct ones).

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

The square root of 42871797 is about 6547.6558400698. The cubic root of 42871797 is about 349.9912841367.

It can be divided in two parts, 4287 and 1797, that added together give a square (6084 = 78²).

The spelling of 42871797 in words is "forty-two million, eight hundred seventy-one thousand, seven hundred ninety-seven".