42734831 has 4 divisors (see below), whose sum is σ = 43435464. Its totient is φ = 42034200.

The previous prime is 42734807. The next prime is 42734849. The reversal of 42734831 is 13843724.

42734831 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42734831 is a prime.

It is a super-2 number, since 2×42734831² = 3652531561197122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42731831) 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, 350225 + ... + 350346.

It is an arithmetic number, because the mean of its divisors is an integer number (10858866).

Almost surely, 2^42734831 is an apocalyptic number.

42734831 is a deficient number, since it is larger than the sum of its proper divisors (700633).

42734831 is an equidigital number, since it uses as much as digits as its factorization.

42734831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700632.

The product of its digits is 16128, while the sum is 32.

The square root of 42734831 is about 6537.1883099694. The cubic root of 42734831 is about 349.6181713548.

The spelling of 42734831 in words is "forty-two million, seven hundred thirty-four thousand, eight hundred thirty-one".