34178742 has 24 divisors (see below), whose sum is σ = 79750944. Its totient is φ = 10516464.

The previous prime is 34178671. The next prime is 34178747. The reversal of 34178742 is 24787143.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 34178697 and 34178706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34178747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72798 + ... + 73265.

It is an arithmetic number, because the mean of its divisors is an integer number (3322956).

Almost surely, 2^34178742 is an apocalyptic number.

34178742 is an abundant number, since it is smaller than the sum of its proper divisors (45572202).

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

34178742 is a wasteful number, since it uses less digits than its factorization.

34178742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146084 (or 146081 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 34178742 is about 5846.2588037137. The cubic root of 34178742 is about 324.5278888790.

The spelling of 34178742 in words is "thirty-four million, one hundred seventy-eight thousand, seven hundred forty-two".