79042005 has 48 divisors (see below), whose sum is σ = 159269760. Its totient is φ = 35512704.

The previous prime is 79042001. The next prime is 79042009. The reversal of 79042005 is 50024097.

It is an interprime number because it is at equal distance from previous prime (79042001) and next prime (79042009).

It is not a de Polignac number, because 79042005 - 2² = 79042001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79042005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79042001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16459 + ... + 20711.

It is an arithmetic number, because the mean of its divisors is an integer number (3318120).

Almost surely, 2^79042005 is an apocalyptic number.

It is an amenable number.

79042005 is an abundant number, since it is smaller than the sum of its proper divisors (80227755).

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

79042005 is a wasteful number, since it uses less digits than its factorization.

79042005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4330 (or 4327 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 79042005 is about 8890.5570691605. The cubic root of 79042005 is about 429.1600784904.

The spelling of 79042005 in words is "seventy-nine million, forty-two thousand, five".