42742734 has 16 divisors (see below), whose sum is σ = 86316672. Its totient is φ = 14109048.

The previous prime is 42742703. The next prime is 42742747. The reversal of 42742734 is 43724724.

42742734 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 42742695 and 42742704.

It is a congruent number.

It is an unprimeable number.

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, 33964 + ... + 35199.

It is an arithmetic number, because the mean of its divisors is an integer number (5394792).

Almost surely, 2^42742734 is an apocalyptic number.

42742734 is an abundant number, since it is smaller than the sum of its proper divisors (43573938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42742734 is a wasteful number, since it uses less digits than its factorization.

42742734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69271.

The product of its digits is 37632, while the sum is 33.

The square root of 42742734 is about 6537.7927467915. The cubic root of 42742734 is about 349.6397217860.

The spelling of 42742734 in words is "forty-two million, seven hundred forty-two thousand, seven hundred thirty-four".