7129842 has 8 divisors (see below), whose sum is σ = 14259696. Its totient is φ = 2376612.

The previous prime is 7129831. The next prime is 7129847. The reversal of 7129842 is 2489217.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

7129842 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (7129847) 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, 594148 + ... + 594159.

It is an arithmetic number, because the mean of its divisors is an integer number (1782462).

Almost surely, 2^7129842 is an apocalyptic number.

7129842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7129842 is a wasteful number, since it uses less digits than its factorization.

7129842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188312.

The product of its digits is 8064, while the sum is 33.

The square root of 7129842 is about 2670.1763986673. The cubic root of 7129842 is about 192.4686360326.

The spelling of 7129842 in words is "seven million, one hundred twenty-nine thousand, eight hundred forty-two".