42812751 has 4 divisors (see below), whose sum is σ = 57083672. Its totient is φ = 28541832.

The previous prime is 42812747. The next prime is 42812779. The reversal of 42812751 is 15721824.

42812751 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 42812751 - 2² = 42812747 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42812741) 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 3 ways as a sum of consecutive naturals, for example, 7135456 + ... + 7135461.

It is an arithmetic number, because the mean of its divisors is an integer number (14270918).

Almost surely, 2^42812751 is an apocalyptic number.

42812751 is a deficient number, since it is larger than the sum of its proper divisors (14270921).

42812751 is a wasteful number, since it uses less digits than its factorization.

42812751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14270920.

The product of its digits is 4480, while the sum is 30.

The square root of 42812751 is about 6543.1453445572. The cubic root of 42812751 is about 349.8305329247.

The spelling of 42812751 in words is "forty-two million, eight hundred twelve thousand, seven hundred fifty-one".