79642424 has 8 divisors (see below), whose sum is σ = 149329560. Its totient is φ = 39821208.

The previous prime is 79642421. The next prime is 79642427. The reversal of 79642424 is 42424697.

It is an interprime number because it is at equal distance from previous prime (79642421) and next prime (79642427).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79642421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4977644 + ... + 4977659.

It is an arithmetic number, because the mean of its divisors is an integer number (18666195).

Almost surely, 2^79642424 is an apocalyptic number.

It is an amenable number.

79642424 is a deficient number, since it is larger than the sum of its proper divisors (69687136).

79642424 is a wasteful number, since it uses less digits than its factorization.

79642424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9955309 (or 9955305 counting only the distinct ones).

The product of its digits is 96768, while the sum is 38.

The square root of 79642424 is about 8924.2604175360. The cubic root of 79642424 is about 430.2440006915.

The spelling of 79642424 in words is "seventy-nine million, six hundred forty-two thousand, four hundred twenty-four".