42179999 has 8 divisors (see below), whose sum is σ = 44287872. Its totient is φ = 40095000.

The previous prime is 42179927. The next prime is 42180013. The reversal of 42179999 is 99997124.

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

It is a cyclic number.

It is not a de Polignac number, because 42179999 - 2⁸ = 42179743 is a prime.

It is a Duffinian number.

42179999 is a modest number, since divided by 9999 gives 4217 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42179909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1877 + ... + 9374.

It is an arithmetic number, because the mean of its divisors is an integer number (5535984).

Almost surely, 2^42179999 is an apocalyptic number.

42179999 is a deficient number, since it is larger than the sum of its proper divisors (2107873).

42179999 is a wasteful number, since it uses less digits than its factorization.

42179999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11437.

The product of its digits is 367416, while the sum is 50.

The square root of 42179999 is about 6494.6130754649. The cubic root of 42179999 is about 348.0985292638.

The spelling of 42179999 in words is "forty-two million, one hundred seventy-nine thousand, nine hundred ninety-nine".