79897042 has 8 divisors (see below), whose sum is σ = 126895356. Its totient is φ = 37598592.

The previous prime is 79897021. The next prime is 79897063. The reversal of 79897042 is 24079897.

It is an interprime number because it is at equal distance from previous prime (79897021) and next prime (79897063).

It can be written as a sum of positive squares in 2 ways, for example, as 64144081 + 15752961 = 8009^2 + 3969^2 .

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 = 79896983 and 79897001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1174923 + ... + 1174990.

Almost surely, 2^79897042 is an apocalyptic number.

79897042 is a deficient number, since it is larger than the sum of its proper divisors (46998314).

79897042 is a wasteful number, since it uses less digits than its factorization.

79897042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2349932.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 79897042 is about 8938.5145298310. The cubic root of 79897042 is about 430.7020117462.

The spelling of 79897042 in words is "seventy-nine million, eight hundred ninety-seven thousand, forty-two".