42717812 has 24 divisors (see below), whose sum is σ = 78614760. Its totient is φ = 20280960.

The previous prime is 42717811. The next prime is 42717823. The reversal of 42717812 is 21871724.

It is a happy number.

42717812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 155236 + 42562576 = 394^2 + 6524^2 .

It is a super-2 number, since 2×42717812² = 3649622924134688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42717811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4058 + ... + 10094.

It is an arithmetic number, because the mean of its divisors is an integer number (3275615).

Almost surely, 2^42717812 is an apocalyptic number.

It is an amenable number.

42717812 is a deficient number, since it is larger than the sum of its proper divisors (35896948).

42717812 is a wasteful number, since it uses less digits than its factorization.

42717812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6131 (or 6129 counting only the distinct ones).

The product of its digits is 6272, while the sum is 32.

The square root of 42717812 is about 6535.8864739223. The cubic root of 42717812 is about 349.5717537795.

The spelling of 42717812 in words is "forty-two million, seven hundred seventeen thousand, eight hundred twelve".