79877242 has 8 divisors (see below), whose sum is σ = 120093876. Its totient is φ = 39845952.

The previous prime is 79877227. The next prime is 79877279. The reversal of 79877242 is 24277897.

It can be written as a sum of positive squares in 2 ways, for example, as 73977201 + 5900041 = 8601^2 + 2429^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 79877192 and 79877201.

It is an unprimeable number.

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, 45253 + ... + 46984.

Almost surely, 2^79877242 is an apocalyptic number.

79877242 is a deficient number, since it is larger than the sum of its proper divisors (40216634).

79877242 is a wasteful number, since it uses less digits than its factorization.

79877242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92672.

The product of its digits is 395136, while the sum is 46.

The square root of 79877242 is about 8937.4068946199. The cubic root of 79877242 is about 430.6664301019. Note that the first 3 decimals are identical.

The spelling of 79877242 in words is "seventy-nine million, eight hundred seventy-seven thousand, two hundred forty-two".