34128642 has 16 divisors (see below), whose sum is σ = 71225280. Its totient is φ = 10881552.

The previous prime is 34128641. The next prime is 34128643. The reversal of 34128642 is 24682143.

It is an interprime number because it is at equal distance from previous prime (34128641) and next prime (34128643).

It is not an unprimeable number, because it can be changed into a prime (34128641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123517 + ... + 123792.

It is an arithmetic number, because the mean of its divisors is an integer number (4451580).

Almost surely, 2^34128642 is an apocalyptic number.

34128642 is an abundant number, since it is smaller than the sum of its proper divisors (37096638).

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

34128642 is a wasteful number, since it uses less digits than its factorization.

34128642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247337.

The product of its digits is 9216, while the sum is 30.

The square root of 34128642 is about 5841.9724408799. The cubic root of 34128642 is about 324.3692444804.

The spelling of 34128642 in words is "thirty-four million, one hundred twenty-eight thousand, six hundred forty-two".