42179279 has 4 divisors (see below), whose sum is σ = 42248040. Its totient is φ = 42110520.

The previous prime is 42179273. The next prime is 42179321. The reversal of 42179279 is 97297124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42179279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42179273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33452 + ... + 34689.

It is an arithmetic number, because the mean of its divisors is an integer number (10562010).

Almost surely, 2^42179279 is an apocalyptic number.

42179279 is a deficient number, since it is larger than the sum of its proper divisors (68761).

42179279 is an equidigital number, since it uses as much as digits as its factorization.

42179279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68760.

The product of its digits is 63504, while the sum is 41.

The square root of 42179279 is about 6494.5576446745. The cubic root of 42179279 is about 348.0965486065.

The spelling of 42179279 in words is "forty-two million, one hundred seventy-nine thousand, two hundred seventy-nine".